Foreland Lighthouse is barely visible near the base of the mighty cliffs of Foreland Point, Countisbury, Exmoor National Park, Devon, England, United Kingdom, Europe

Ama Dablam base camp in the Everest region glows at twilight, Himalayas, Nepal, Asia

Ama Dablam base camp, Himalayas, Nepal, Asia

Mirador Base Las Torres, Torres del Paine National Park (Parque Nacional Torres del Paine), Patagonia, Chile, South America

Seljalandsfoss Waterfall tumbling over towering cliffs in bright sunlight with rainbow at the base of the waterfall, near Hella, Southern Iceland, Iceland, Polar Regions

Views of the Catholic church at the Chilean research base Presidente Eduardo Frei Montalva, Antarctica, Southern Ocean, Polar Regions

Apollo 11, Armstrong Photographing Aldrin, 1969

Apollo 11, Lunar Module, 1969

Apollo 11, Astronaut Buzz Aldrin Moonwalk, 1969

Buzz Aldrin on Moon, Apollo 11

Apollo 11, President Nixon Talks with Neil Armstrong, 1969

Apollo11, Buzz Aldrin Composite, 1969

Apollo 11, Tranquility Base and American Flag, 1969

Apollo 11, Astronaut Buzz Aldrin Moonwalk, 1969

Apollo 11 Footprint on the Moon

Apollo 11, American Flag on the Moon, 1969

Apollo 11, Buzz Aldrin Bootprint, 1969

Apollo 11, Buzz Aldrin Deploys EASEP, 1969

Jesus Alberto Dazza scoops fertilizer on the base of young coffee plants in the rural highlands of Colombia's coffee axis. In the background, Luis Fernandez (center), Dario Valencia (left), Jaime Arias (left)

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.

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.

A young man pours fertilizer at the base of young coffee plants on a coffee farm in rural Colombia.

base jumpers going off at the Turkey Boogie near Moab, Utah

A hiker stands at the base of La Fortuna Waterfall in the Alajuela Province of Costa Rica.