Thatched houses in a village of Embera native community living by the Chagres River within the Chagres National Park, Republic of Panama, Central America

Whitewater kayakers run the last drop of the Fishladder on the Great Falls of the Potomac River, Maryland, United States of America, North America

Commercial rafters run the Lava Falls Rapid, just before river mile 180, Grand Canyon National Park, Arizona, United States of America, North America

Commercial rafters run the Deubendorff Rapid, just past river mile 132, Grand Canyon National Park, Arizona, United States of America, North America

Commercial rafters run the Sheer Wall Rapid, just past river mile 14, Grand Canyon National Park, Arizona, United States of America, North America

Commercial rafters run the Lava Falls Rapid, just before river mile 180, Grand Canyon National Park, Arizona, United States of America, North America

Racoon. Running. Florida, usa

Spawning sockeye salmon (Oncorhynchus nerka), also called red salmon or blueback salmon gathering to run upstream in the Mendenhall River just outside Juneau, Southeast Alaska, USA. Pacific Ocean

An urban river channeled to run through the centre of Burnley in Lancashire, England, United Kingdom, Europe

Spawning sockeye salmon (Oncorhynchus nerka), also called red salmon or blueback salmon gathering to run upstream in the Mendenhall River just outside Juneau, Southeast Alaska, USA. Pacific Ocean

Spawning sockeye salmon (Oncorhynchus nerka), also called red salmon or blueback salmon gathering to run upstream in the Mendenhall River just outside Juneau, Southeast Alaska, USA. Pacific Ocean

old watermills, Bodental, Carinthia, Austria

Man swim and hike canyoning, Raebloch, Emmental valley, Canton of Bern, Switzerland, MR

Female cyclist near river Danube, Run-of-the-river hydroelectricity Jochenstein, Danube Cycle Route Passau to Vienna, Upper Austria, Austria

Meander of the Seine river and Galliard Castle, Chateau-Gaillard, Les Andelys, Seine valley, Normandy, France, Europe

The unique experience of visiting this beautiful desert on camels makes Wadi Rum a worthwhile stop on a visit to Jordan. Dozens of Beduin-run tours cater to tourism

Labrador dog running through river Rems, Remstal valley, Baden Wuerttemberg, Germany, Europe

Sewage canal, tunnel, pipe, workman, underground, remodelling of the Emscher River, Emscher-Industrial Waste Canal, Wanne-Eickel, Herne, Ruhr Area, North Rhine-Westphalia, Germany, Europe

The unique experience of visiting this beautiful desert on offroad vehicles makes Wadi Rum a worthwhile stop on a visit to Jordan. Dozens of Beduin-run tours cater to tourism

Labrador dog running through river Rems, Remstal valley, Baden Wuerttemberg, Germany, Europe

Dried salmon head on gravel bank with fall foliage at the back, Big Salmon River, Yukon Territory, Canada

Ruins of the bishop's castle, Daugava river, Koknese, Latvia, Baltic States, Nothern Europe

Ponte Vasco da Gama Bridge, Lisbon, Portugal, Europe

Aerial view, river Ruhr between the Hagen, Dortmund and Herdecke cities, Koepchenwerk pumped storage power plant in Herdecke, Hengstey run-of-the-river hydroelectric power station, Hagen, Sauerland region, North Rhine-Westphalia, Germany, Europe

Young lion (Panthera leo) attacking a herd of wildebeest, Maasai Mara National Reserve, Narok County, Kenya, Africa

Galliard Castle, Chateau-Gaillard, Les Andelys, Seine valley, Normandy, France, Europe

Porto old town, the Ribeira Quarter, Portugal

Dilapidated old mill with mill wheel on the Bode river, snow, Weddersleben near Thale, northern Harz, Saxony-Anhalt, Germany, Europe

Castle ruins on a cliff, on Sorgue River, near Fontaine de Vaucluse, Provence, France, Europe

Castle ruins and moat with Birze river, castle of the Teutonic Knights, Doblen, Latvia, Baltic States, Northern Europe

14 boats staring in Brodenbach on the Moselle river on a run to the European Championship in the class OSY 400, Brodenbach, Rhineland-Palatinate, Germany, Europe

Baldeneysee Lake, reservoir of the river Ruhr, towpath, walkers, autumn, Essen, North Rhine-Westphalia, Germany, Europe

Ruins of the former Franciscan monastery, Askeaton on the River Deel, County Limerick, Ireland, Europe

Hippopotamus (Hippopotamuspotamus amphibius), Okavango Delta, Botswana, Africa

Old castle in the mountains, Langar, Wakhan Corridor, Tajikistan, Central Asia

A Pashtun man stands outside the Cuban hospital in the Meira camp for earthquake survivors, NWFP, Pakistan. The Cuban government sent 30,000 doctors, nurses and other personnel to set up field hospitals throughout the earthquake affected area. The Meira Tent camp (also called Mera, or Maria camp), is run by the Pakistani army like a small city, and is located on the Indus River in the Battagram district. The camp, the largest for displaced people in Pakistan, hosts over 21,000 earthquake survivors, primarily Pashtuns from the Allai valley in Pakistan's NWFP, one of the areas worst-hit by the October 8, 2005 earthquake.

A professional kayaker runs falls in Tennessee.

Friends run together through a meadow on a track towards Elk Ridge, White River National Forest, Colorado.

An attractive middle-aged woman wearing active wear and listening to music while pausing to do some stretch exercises during a run in a city park at sunset on a warm autumn evening, Edmonton, Alberta, Canada

An attractive middle-aged woman wearing active wear and listening to music while pausing to do some stretch exercises during a run in a city park at sunset on a warm autumn evening, Edmonton, Alberta, Canada

Brown Bear Catches Salmon And Quickly Runs To Shore, Brooks River, Katmai National Park, Southwest Alaska

Scenic view of a large herd of blue wildebeest (Connochaetes taurinus) near shore of river while a group of plains zebra (Equus quagga) cross the water, Serengeti National Park, Tanzania, Africa

Close-up view of a large herd of blue wildebeest (Connochaetes taurinus) crossing the Mara River in dust clouds, Serengeti National Park, Tanzania, Africa

Slow pan view of a large herd of blue wildebeest (Connochaetes taurinus) rushing across a stream in dust clouds, Serengeti National Park, Tanzania, Africa

Blue wildebeest (Connochaetes taurinus) herd traverses stream in dust in Serengeti National Park, Tanzania

Stream of blue wildebeest (Connochaetes taurinus) gallop across stream in Serengeti National Park, Tanzania

Three blue wildebeest (Connochaetes taurinus) galloping across shallow stream in Serengeti National Park, Tanzania

Blue wildebeest (Connochaetes taurinus) gallop across river in spray in Serengeti National Park, Tanzania

Blue wildebeest (Connochaetes taurinus) herd races across shallow stream in Serengeti National Park, Tanzania

Herd of Blue wildebeest (Connochaetes taurinu) walk across river in Serengeti National Park, Tanzania

Herd of plains zebra (Equus burchellii) gallop across river in Serengeti National Park, Tanzania

Three blue wildebeest (Connochaetes taurinus) gallop across shallow river in Serengeti National Park, Tanzania

Close-up view of a herd of blue wildebeest (Connochaetes taurinus) crossing the Mara River in large numbers, Serengeti National Park, Tanzania, Africa

An attractive middle-aged woman wearing active wear pauses to text message while out running beside a creek in a city park on a warm fall evening and listening to music on her smart phone, Edmonton, Alberta, Canada

Wildebeest (Connochaetes taurinus) crowd together as they run along the shore of the Mara River looking for a place to cross, Serengeti National Park, Tanzania

Blue wildebeest (Connochaetes taurinus) jump into river from shore in Serengeti National Park, Tanzania

Scenic view of a large herd of blue wildebeest (Connochaetes taurinus) crossing Mara in two lines, Serengeti National Park, Tanzania, Africa

Line of Blue wildebeest (Connochaetes taurinu) zigzag across river in sunshine in Serengeti National Park, Tanzania

Blue wildebeest (Connochaetes taurinus) herd races across shallow river in Serengeti National Park, Tanzania

Blue wildebeest (Connochaetes taurinus) herd traverses stream in dust in Serengeti National Park, Tanzania

Steams From The Hot Springs Run Off In Sub Zero Winter, Chena Hot Springs Resort, Fairbanks, Alaska, United States Of America

German shepherd running on the seashore with a wooden stick in the mouth; Sainte-Anne-des-Monts, Quebec, Canada

German shepherd running and jumping on the seashore; Sainte-Anne-des-Monts, Quebec, Canada

An Old Shed Sits In Twilight At The Village Of Igiugig, Alaska, At The Headwaters Of The Kvichak River.

Grizzly Bear (Ursus Arctos Horribilis) Running Through A Stream, Tenakee Springs, Alaska, United States Of America

A pride of lions, Panthera leo, run through a river, Londolozi Game Reserve, Sabi Sands, South Africa

Blue wildebeest crossing a river, East Africa

Eurasian wild boar (Sus scrofa ) piglets were part of a group of 5 running on a dry arm of the Loire River, Loire Valley, France

African buffalo (Syncerus caffer) running in river in Kruger National park, South Africa

Eurasian wild boar (Sus scrofa ) piglet was part of a group of 5 running on a dry arm of the Loire River, Loire Valley, France

Pine marten (Martes martes) exploring its territory in foggy weather on a Loire beach, Loire Valley, France

Eurasian wild boar (Sus scrofa) male crossing an arm of the Loire River, Loire Valley, France