 Mesquite Flat Sand Dunes in Death Valley, California, USA
 Mountaineer during a strenuous hike in the rain, Mount Roraima, table mountain, border triangle of Brazil, Venezuela and Guyana
 Senior citizen hikers on a strenuous climb of a steep hill during hiking in the shrubland. The Menashe Heights in the southern end of Mount Carmel.
 Refusal - dog sledding, Norway
 Footprints lead up steep sand dune
 Mesquite Flat Sand Dunes in Death Valley, California, USA
 After a day of strenuous rock climbing and hiking a retired couple pose for the camera fitness fit
 People hiking a strenuous Angel's Landing trail at Zion National Park - beautiful scenic views
 Elderly woman being tired of exercising with dumbbells
 Colorful rock formations along Angel's Landing trail at Zion National Park, Utah
 Mesquite Flat Sand Dunes in Death Valley, California, USA
 At the top of the cliff between Challaborough Beach and Ayrmer Cove, Ringmore, South Devon, UK
 A rickshaw driver carries passengers through the streets of Kolkata, India
 People on the steep path to Gwynver Beach, near Penzance, Cornwall, England, UK.
 Steps in Carcassone France
 Mesquite Flat Sand Dunes in Death Valley, California, USA
 Windsurfers in the sea off Camber Sands in Sussex. Photo by Gordon Scammell
 burnout 1
 RICKSHAW DRIVER WALKING WITH A LOAD OF MANY HEAVY SACKS IN INDIA
 Man and teenage girl turf cutting Three Bees Community Garden April 2018 Mickleton Cotswolds UK
 Mesquite Flat Sand Dunes in Death Valley, California, USA
 Mountaineer during a strenuous hike in the rain, Mount Roraima, table mountain, border triangle of Brazil, Venezuela and Guyana
 A senior citizen 69 year old woman hiker comes down a dangerous and high dry waterfall, another hiker is about to follow her.
 A Chinese American woman pushing a food cart into place on a street in Chinatown, Flushing, Queens, New York City
 People trekking to Table Mountain Cape Town South Africa
 Local Indian man pedalling a tricycle rickshaw, passenger sitting on a large load of sacks at a road junction in a busy street in Old Delhi, India
 People hiking a strenuous Angel's Landing trail at Zion National Park - beautiful scenic views
 Young man exerting himself on a mountain bike cycling uphill on a gravel track through a pine forest on a winter afternoon
 BARREL RACING at the Rodeo in Alberta, Canada.
 Mountain bike racers on a sunny day in Arkansas
 Cagliari Sardinia Italy
 Finish of Stage 6 Tour of Britain Whinlatter 7 September 2018, Jasha Sutterlin 10th, Ethan Hayter 11th, Christopher Hamilton 12th, Scott Davies 13th.
 People on the steep path to Gwynver Beach, near Penzance, Cornwall, England, UK.
 Backpacker hiking trail out of the North Fork of the Granit Creek drainage, Grand Teton National Park, Teton County, Wyoming, USA
 Yosemite Valley. Yosemite Falls
 Junior Tug of War, 122nd Bentley Fete & Flower Show, Bentley, Hampshire, UK. 15 July 2017.
 Open gate on empty tennis court
 OVERWORKED RICKSHAW DRIVER ON HIS WAY TO ANOTHER VERY HEAVY LOAD INDIA
 Man and teenage girl turf cutting Three Bees Community Garden April 2018 Mickleton Cotswolds UK
 Rome, Italy - April 2nd, 2017: Athletes of the 23rd Rome Marathon to the passage of the tunnel Umberto I, a few kilometers from the finish.
 Sunrise over fishing village of Danang
 A senior citizen 58 year old man hiker is carefully descending a very steep rocky slope using a hiking stick to avoid falling.
 A meat delivery man carrying an entire pig to a Chinese restaurant on Mott Street in Chinatown, New York City
 A man works cut asphalt road with a diamond cutter, No protective work gear, Czech Republic
 Local Indian man pedalling a tricycle carrying a large heavy load of sacks at a road junction in a busy street in Old Delhi, Delhi, Punjab, India
 People hiking a strenuous Angel's Landing trail at Zion National Park - beautiful scenic views
 Beautiful bodybuilder figure in a dark vein underlined muscle. On a black background.
 BARREL RACING at the Rodeo in Alberta, Canada.
 Mountain bike racers on a sunny day in Arkansas
 Cagliari Sardinia Italy
 A team pulls in the tug-of-war contest at A Day For Kids, an event where adults play kids games for charity, on September 7, 2013 in Atlanta, GA.
 The Bright Angel Trailhead in the Grand Canyon is one of the park's most popular trails. This tunnel is within the first five minutes of the hike.
 Backpacker hiking trail out of the North Fork of the Granit Creek drainage, Grand Teton National Park, Teton County, Wyoming, USA
 Yosemite Valley. Yosemite Falls
 Junior Tug of War, 122nd Bentley Fete & Flower Show, Bentley, Hampshire, UK. 15 July 2017.
 A windsurfer in the sea off Camber Sands in Sussex. Photo by Gordon Scammell
 RICKSHAW DRIVER AND AN OLD RICKSHAW AMONG THE MODERN MACHINES IN THE STREETS OF INDIA
 Hikers approach the Harding Icefield Shelter, Exit Glacier in Kenai Fjords National Park, Alaska
 Rome, Italy - April 2nd, 2017: Athletes of the 23rd Rome Marathon to the passage of the tunnel Umberto I, a few kilometers from the finish.
 Detail of the Cinder Cone trail, Lassen Volcanic National Park, when it curves, on a smoky day, featuring plenty of copyspace
 A senior citizen woman hiker descends carefully a very steep rocky slope from Mount Massor using a hiking stick to avoid falling
 Fit elderly woman climbing the steps to summit Malham Cove Yorkshire Dales National Park Malham North Yorkshire England UK
 A man works cut asphalt road with a diamond cutter, No protective work gear, Czech Republic
 Lifeguard carrying sign at beach Long Island NY
 Young woman hiking a strenuous Angel's Landing trail at Zion National Park - beautiful scenic views
 Calm bodybuilder standing on a dark background it shine large muscles of the body.
 Rodeo, Calgary Stampede, Alberta, Canada, Barrel racing where horse and rider compete in a fast and furious timed event competition.
 Mountain bike racers on a sunny day in Arkansas
 Cagliari Sardinia Italy
 A team pulls in the tug-of-war competition at A Day For Kids, an event where adults play kids games for charity on September 7, 2013 in Atlanta, GA.
 Panorama windy snow storm blowing horizontal snow polar habitat research base Antarctica, low visibility soft focus white-out snow mountain background
 Backpackers hiking the Teton Crest Trail above the Granit Creek drainage in the Grand Teton National Park, Teton County, Wyoming, USA
 Yosemite Valley. Yosemite Falls
 Young woman looks intently
 A parasurfer in the sea off Camber Sands in Sussex. Photo by Gordon Scammell
 YOUNG RICKSHAW DRIVER AND A LOAD OF MANY HEAVY SACKS INDIA
 Woman pulling weeds in a shady area of her yard in Issaquah, Washington, USA
 Rome, Italy - April 2nd, 2017: Athletes of the 23rd Rome Marathon to the passage of the tunnel Umberto I, a few kilometers from the finish.
 Cinder Cone trail, Lassen Volcanic National Park, on a smoky day, featuring the lava bed, the bare, rugged terrain and a few pine trees
 A senior citizen hiker is balancing himself while carefully descending a very steep rocky slope his three friends follow him.
 Lake District Cumbria England Two young men on mountain bikes reaching the summit of Newlands Pass
 A man works cut asphalt road with a diamond cutter, No protective work gear, Czech Republic
 Lifeguard carrying sign at beach Long Island NY
 Young woman hiking a strenuous Angel's Landing trail at Zion National Park - beautiful scenic views
 Bodybuilder with big muscles holding a small violin in the hands of demonstrating grace of the body.
 strenuous young man moving boxes from car into new house
 The Magnificent View Of Lake Garda Is The Reward For The Strenuous Climb To Monte Altissimo
 Cagliari Sardinia Italy
 Teams pull hard in the tug-of-war competition at A Day For Kids, an event where adults play kids games for charity on September 7, 2013 in Atlanta, GA.
 A bushwalker climbs a step section of the strenuous walking track to Bulimba Bluff in Carnarvon Gorge National Park in Queensland, Australia.
 Two backpackers pausing to admire the view of the snow covered Grand Teton peak from the Teton Crest Trail, Jedediah Smith Wilderness, Teton County, W
 Yosemite Valley. Merced River
 Mann faehrt auf einem Mountainbike (model-released)
 Craftsmen, shovel, gravel, grit, construction, man, men at work, worker, work, shovel shoes, detail, feet, working shoes, working trousers, dirtily, stony, gravel, stone, stones, strain, with difficulty, strenuous, outside, medium close-up, detail,
 RICKSHAW DRIVER AND A LOAD OF HEAVY SACKS INDIA
 Woman pulling weeds in a shady, rocky area of her yard in Issaquah, Washington, USA
 Rome, Italy - April 2nd, 2017: Athletes of the 23rd Rome Marathon to the passage of the tunnel Umberto I, a few kilometers from the finish.
 Top of Cinder Cone trail, Lassen Volcanic National Park, on a smoky day, featuring the lava bed, bare, rugged terrain, and curves
 Senior citizen hikers are using sticks and hands in support while climbing a steep rocky cliff ahead of them in the Negev Desert
 Mann faehrt auf einem Mountainbike (model-released)
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