One thousand foot waterfall over the Mountain Pine Ridge, Belize, Central America

Hverir geothermal fields at the foot of Namafjall mountain, Myvatn lake area, Iceland, Polar Regions

Farm at the foot of the Maamturk mountains near Maam, Connemara, County Galway, Ireland

Village at foot of Karokoram Mountains, Skardu Valley, North Pakistan

Snow-covered peaks and valleys of Karokoram Mountains, Skardu Valley, North Pakistan

Family on green meadow admires the flowering trees at the foot of Odle, Funes Valley, South Tyrol, Dolomites, Italy, Europe

River runs through valleys of Karokoram Mountains, Skardu Valley, North Pakistan

Luxury ski resort Klosters nestling at the foot of the Swiss Alps Switzerland.

Hverir geothermal fields at the foot of Namafjall mountain, Myvatn lake area, Iceland, Polar Regions

Family on green meadows admires the flowering trees at the foot of Odle, Funes Valley, South Tyrol, Dolomites, Italy, Europe

A tourist boat among the icebergs floating in Jokullsarlon lake at the foot of the Vatnajokull glacier, in the southeast, Iceland, Polar Regions

Land Cruiser driving on a dirt road near the village of Nakapiripirit at the foot of the Debasien mountains in the Nakapiripirit region of eastern Uganda.

Manor house of the Boschendal wine estate nestled at the foot of the Groot Drakenstein Mountains between Franschhoek and Stellenbosch.

A tourist boat dwarfed by icebergs floating in Jokullsarlon lake at the foot of the Vatnajokull glacier, in the southeast, Iceland, Polar Regions

The Crows Foot glacier in the Canadian Rockies, Canada, North America

La Calahorra Castle in La Calahorra at the foot of the Sierra Nevada mountains in Andalucia, Spain, Europe

La Calahorra Castle in La Calahorra at the foot of the Sierra Nevada mountains in Andalucia, Spain, Europe

Mixed Race female runner stretching

Mixed Race female runner stretching

Female hiker sitting on a landing stage in Weggis, Lake Lucerne, canton Lucerne, Switzerland, Europe

Taichi master demonstrating Taichi in front of his old house at the foot of Mount Wudang, Wudang Shan, Taoist mountain, Hubei province, Wudangshan, Mount Wudang, UNESCO world cultural heritage site, birthplace of Tai chi, China

Two barefoot women on summit of Grosslitzner, Silvretta mountain range, Vorarlberg, Austria

Bike and foot path leading up to Castell Alaro, on Puig D`Alaro, near village Alaro, Tramuntana, Mallorca, Balearic Islands, Spain

Mother carrying daughter in her arms, lake Starnberg, Berg, Upper Bavaria, Germany

Climbing equipment at the foot of the wall - multi-pitch climbing on Leonhardstein, Bavarian Prealps

Two people bathing their feet in the water of a lake, Lake Tegernsee, Upper Bavaria, Bavaria, Germany

Gypsies on a horse-drawn carriage on the foot of the Piatra Craiuli Mountain range, Transylvania, Carpathian Mountains, Romania, Europe

girl and boy trudging through the snow in winter, Pfronten, Allgaeu, Bavaria, Germany

La Batisse castle at the foot of a volcano, Auvergne, France, Europe

A woman and a boy sitting on a rock at the riverbank, South Tyrol, Italy, Europe

Man balancing on a slackline in sunset, Oberstdorf, Bavaria, Germany

Woman enjoying view over Lake Como to Tremezzo, Lombardy, Italy

Young man balancing on a slackline, Oberstdorf, Bavaria, Germany

Arequipa at the foot of volcano El Misti, Peru, South America

Man hanging on a slackline, Oberstdorf, Bavaria, Germany

Young woman sunbathing on a jetty at a mountain lake, Voels am Schlern, South Tyrol, Italy, Europe

Young woman lying in the grass, near lake Tegernsee, Upper Bavaria, Bavaria, Germany

Tejeda at the foot of Roque Bentayga, Gran Canaria, Canary Islands, Spain

Village at the foot of the High Altas, Kasbah Ait Benhaddou, Morocco, Africa

Hiker crossing a wooden bridge above a mountain brook, National Park Hohe Tauern, Tyrol, Austria

Woman climbing a sanddune at Tin Merzouga, Acacus Mountains or Tadrart Acacus range, Tassili n'Ajjer National Park, Unesco World Heritage Site, Algeria, Sahara, North Africa

Rest on a mountain walk, hiker relaxing on a meadow, province of Bolzano-Bozen, Italy, Europe

Young Chimpanzee (Pan troglodytes), baby, Mahale Mountains National Park, Tanzania, East Africa, Africa

Ice chapel with meltwater stream, ice field at the foot of the Watzmann east face, Berchtesgaden National Park, Watzmann, Schoenau am Koenigssee, Upper Bavaria, Bavaria, Germany, Europe

Velan Hut, Cabane du Velan, of the Swiss Alpine Club, SAC, at the foot of the Grand Combin Mountain, Valais Alps, Valais, Switzerland, Europe

Snow-covered winter landscape with snow shoe tracks and Guffert mountain, Achenkirch, Tyrol, Austria

House near VÂgan, Kvitholmen, Lofoten Island of VestvÂgoya, Lofoten Islands, North Norway, Norway, Europe

Feet and climbing boots of a hiker, Texelgruppe, South Tyrol, Italy

Vineyard with vines for Chasselas grapes at the foot of the Jura mountains in the spring, Begnins, Vaud, Switzerland, Europe

Cacti at the foot of Mt. Nevado de Cachi, Salta Province, Argentina

Hiker crossing a wooden bridge above a mountain brook, National Park Hohe Tauern, Tyrol, Austria

Three pagodas of the Chongshen monastery at the foot of the Zhonghe Peak, Dali, Yunnan, China, Asia

View of the Pasterze glacier at the foot of the Grossglockner, mountain, Alps, Hohe Tauern National Park, Austria, Europe

Rittergassse Alley at the foot of the Schlossberg Mountain, Quedlinburg, Saxony-Anhalt, Germany, Europe

The Manitou and Pikes Peak Railway near the summit of Pikes Peak; the cog railway takes tourists to the top of the 14, 100-foot mountain, Colorado Springs, Colorado, USA

Legs of a hiker with climbing boots

View of the city of Bahla at the foot of the Jebel Akhda Highlands, Sultanate of Oman, Middle East

The Manitou and Pikes Peak Railway near the summit of Pikes Peak; the cog railway takes tourists to the top of the 14, 100-foot mountain, Colorado Springs, Colorado, USA

Feet and climbing boots of a hiker, Sextenan Dolomites, South Tyrol, Italy

Tourists at the foot of Mount Cervin, Matterhorn, Zermatt, Switzerland

Pasterze, glacier at the foot of the Grossglockner in the Hohe Tauern National Park, mountains, Alps, Austria, Europe

Legs of a hiker with climbing boots

Panoramic views over Kalambaka at the foot of the Meteora Rocks, Thessaly, Greece, Europe

The Manitou and Pikes Peak Railway near the summit of Pikes Peak; the cog railway takes tourists to the top of the 14, 100-foot mountain, Colorado Springs, Colorado, USA

Tourists at the foot of Mount Cervin, Matterhorn, Zermatt, Switzerland

View of the city of Bahla and Bahla Fortress, UNESCO World Heritage Site, at the foot of the Jebel Akhda Highlands, Sultanate of Oman, Middle East

A foot of the saviour statue on the Monte Ortobene Mountain, near Nuoro, Sardinia, Italy

The Manitou and Pikes Peak Railway on the summit of Pikes Peak; the cog railway takes tourists to the top of the 14, 100-foot mountain, Colorado Springs, Colorado, USA

Jablonne v Podjestedi, town at the foot of the Lusatian Mountains, North Bohemia, Bohemia, Czech Republic, Europe

Village Alleghe at Lago di Alleghe at the foot of mount Civetta, one of the icons of the Dolomites of the Veneto. The Dolomites of the Veneto are part of the UNESCO world heritage. Europe, Central Europe, Italy, October

Resting at the foot of mountains, tents glow with light.

Three participants of the UTMB are running in the hills of Chamonix. The famous peaks of the Mont Blanc range are in the background. The Ultra-Trail du Mont-Blanc (also referred to as UTMB) is a single-stage mountain ultramarathon. It takes place once a year in the Alps, across France, Italy and Switzerland. The distance is approximately 166 kilometres (103 mi), with a total elevation gain of around 9,600 m. It is widely regarded as one of the most difficult foot races in Europe. It's certainly one of the largest with over two thousand starters. The combined participation in all of the events is approaching 10 thousand runners. While the best runners complete the loop in slightly more than 20 hours, most runners take 30 to 45 hours to reach the finish line.

An elderly woman is running in the hills of Chamonix. She is close to finishing the extremely exhausting UTMB race. The Ultra-Trail du Mont-Blanc (also referred to as UTMB) is a single-stage mountain ultramarathon. It takes place once a year in the Alps, across France, Italy and Switzerland. The distance is approximately 166 kilometres (103 mi), with a total elevation gain of around 9,600 m. It is widely regarded as one of the most difficult foot races in Europe. It's certainly one of the largest with over two thousand starters. The combined participation in all of the events is approaching 10 thousand runners. While the best runners complete the loop in slightly more than 20 hours, most runners take 30 to 45 hours to reach the finish line.

Eric Chabala looks for foot placement on an overhanging bouldering route. Eric is on a bouldering expedition in Patagonia, outside of El Chalten, Argentina. Fitz Roy Peak is in the background.

Rick Hodge makes it look easy on a nearly 3000 foot powder run in the Chugach Mountains

Tommy Caldwell and Beth Rodden keep warm in their sleeping bags at their bivy site while camping high on a ridge off of Longs Peak in Rocky Mountain National Park, Colorado. The Diamond is a 2000 thousand foot rock face popular for rock climbing (see background).

Runners cross a river in the hardrock 100. Billed as the toughest running race in America by many, the Hardrock 100 covers 100 miles and includes climbing a total of nearly 30,000 feet (equivilent to climbing Everest). The race begins and ends in Silverton, Colorado and climbs several 13,000 foot passes and one 14,000 foot summit.

Chris McNamara uses a sky hook to move higher while rock climbing Mescalito on El Capitan in Yosemite National Park, California. By the time McNamara was 18 years old he had rock climbed the 3000 foot high El Capitan more than 50 times. El Capitan is considered a big wall and usually requires aid climbing.

Male hiker filters water on a cliff-pinched patio near Deer Creek Falls in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Hikers overlook the Colorado River as they exit the Deer Creek Narrows in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Hikers setup camp on a beach along the Colorado River near the plumeting 180-foot Deer Creek Falls in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Hikers follow a route along the Colorado River that connect Tapeats Creek and Thunder River to Deer Creek in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Hikers setup camp on a beach along the Colorado River near the plumeting 180-foot Deer Creek Falls in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Male highliner in cowboy hat walks a 125 foot highline over a lake in a gap on top of Mammoth Crest, Mammoth, California, United States

Two climbers dig out their tent after a snowstorm covered them in 14k camp on Mount McKinley, Alaska. Climbers are advised to spare no expense on a expedition-quality tent as it can mean the difference between life and death during a ferocious storm on Denali. Extra poles and repair materials are important in case of damage caused by storms. Plan to take extra pickets, wands or deadmen for tent anchors. Never leave a tent without anchoring it securely. Tents are lost each year due to sudden gusts of wind while the tent was left unattended or drying. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to base camp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage.

A mountain ranger is digging out tents after a snowstorm covered them during the night in 14k camp on Mount McKinley, Alaska. Climbers are advised to spare no expense on a expedition-quality tent as it can mean the difference between life and death during a ferocious storm on Denali. Extra poles and repair materials are important in case of damage caused by storms. Plan to take extra pickets, wands or deadmen for tent anchors. Never leave a tent without anchoring it securely. Tents are lost each year due to sudden gusts of wind while the tent was left unattended or drying. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to base camp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage.

High Mountain Rangers Tom Ditola and David Weber are taking a rest on the West Rib on Mount McKinley, Alaska. Mount Hunter in the background. They are above the clouds in blue sky and the sun is shining. Mount McKinley, native name Denali, is the highest mountain peak in North America, with a summit elevation of 20,321 feet (6,194 m) above sea level. At some 18,000 feet (5,500 m), the base-to-peak rise is considered the largest of any mountain situated entirely above sea level. Measured by topographic prominence, it is the third most prominent peak after Mount Everest and Aconcagua. Located in the Alaska Range in the interior of the U.S. state of Alaska, McKinley is the centerpiece of Denali National Park and Preserve. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to base camp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage.

Mountain ranger Brian Scheele on this way to Windy Corner on Mount McKinley, also know as Denali, in Alaska. He is pulling a sled, that together with his heavy backpack is containing all the gear like tents, clothing and food. Every climbing season High Mountain Rangers of the Denali National Park Service are called to help climbers in need. If possible the patient is brought down to Basecamp on foot, only in life threatening conditions a helicopter is called to evacuate the patient to a hospital in Anchorage. Mount McKinley, native name Denali, is the highest mountain peak in North America, with a summit elevation of 20,321 feet (6,194 m) above sea level. At some 18,000 feet (5,500 m), the base-to-peak rise is considered the largest of any mountain situated entirely above sea level. Measured by topographic prominence, it is the third most prominent peak after Mount Everest and Aconcagua. Located in the Alaska Range in the interior of the U.S. state of Alaska, McKinley is the centerpiece of Denali National Park and Preserve.

Male highliner jumps off a 125 foot highline over lakes in a gap on top of Mammoth Crest, Mammoth, California, United States

Hikers climb out of Surprise Valley to the North Rim of the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Hikers on the sandstone Esplanade of the Thunder River Trail below the North Rim of the Grand Canyon outside Fredonia, Arizona November 2011. The 21.4-mile loop descends 2000-feet in 2.5-miles through Coconino Sandstone from the Bill Hall trailhead to connect the Thunder River and Deer Creeks trails. Hikers descend into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley, Deer Creek, Tapeats Creek via Thunder River and even the Colorado River.

Hikers on the sandstone Esplanade of the Thunder River Trail below the North Rim of the Grand Canyon outside Fredonia, Arizona November 2011. The 21.4-mile loop descends 2000-feet in 2.5-miles through Coconino Sandstone from the Bill Hall trailhead to connect the Thunder River and Deer Creeks trails. Hikers descend into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley, Deer Creek, Tapeats Creek via Thunder River and even the Colorado River.

Hikers follow a route along the Colorado River that connect Tapeats Creek and Thunder River to Deer Creek in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon through a break in the 400-foot-tall Redwall to access Surprise Valley. Hikers connect Thunder River and Tapeats Creek to a route along the Colorado River and climb out Deer Creek.

Male highliner in cowboy hat walks a 125 foot highline over a lake in a gap on top of Mammoth Crest, Mammoth, California, United States

Muddy racer at a mountain bicycle race held in Durango, Colorado in 1992 during the first years of the sport. Durango was and has been a Mecca for Mountain bikers throughout the nation.

Group of young people standing at foot of Pericnik waterfall in alpine Vrata valley near Mojstrana in Triglav National Park, Slovenia

A male skier jumps off a 100 foot cliff known as the diving board in the Grand Targhee Backcountry, Wyoming.

A male snowboarder rides off a 50 foot cliff in the Wyoming Backountry.

A brown bear (Ursus arctos) standing upright among the sedges, appears to dance to music only it can hear overlooking McNeil Cove in Southwestern Alaska, Alaska, United States of America

Timberline, Oregon, United States Of America; Snowshoer In Deep Winter Snow On Mount Hood