Pack horses laden with trekking equipment cross the Konze La on the Hidden Valleys trek, Ladakh, India, Asia

Pack horses in the Ladakh region, Himalayas, India, Asia

The high passes have spiritual significance for local people as well as those from afar, Prinkiti La, Ladakh, India, Asia

Pack Horse Bridge, Allerford, Exmoor, Somerset, England, UK

A cowboy wrangler leads a pack train of horses up the South Kaibab Trail in Grand Canyon National Park, UNESCO World Heritage Site, Arizona, United States of America, North America

Pack horses cross a small pass near Goyul along the Lasa to Gasa trekking route, Bhutan, Himalayas, Asia

Horse transport on the trail to Refugio Chileno, Torres del Paine National Park, Patagonia, Chile, South America

Turquoise mooutain lodge and pack mules, Lang Tang village, Himalayas, Nepal, Asia

Pack horses on their way down cross a wire bridge, Tzum Valley, Nepal, Asia

A Chinese farmer walks with his horse up to the Jinkeng rice terraces to work. Longshen, China.

Swing bridge made of steel over Dudh Koshi river, Solukhumbu, Khumbu, Mount Everest region, Nepal

Stacked nets filled with with feed for game

Horse caravan carrying goods over a bridge in Dudh Koshi, Imja Khola valley, Khumbu, Himalaya, Nepal, Asia

Supply of Willersalpe alp only by horses, Hinterstein, Hintersteiner Valley, Bad Hindelang, Allgaeu, Bavaria, Germany, Europe

Supply of Willersalpe alp only by horses, Hinterstein, Hintersteiner Valley, Bad Hindelang, Allgaeu, Bavaria, Germany, Europe

Dave Dohnel from Frontier Pack Train rides a horse outside of Bishop, California. Frontier Pack Train offers full service trips intro the backcountry by horse, that will meet your personal needs including full service kitchens, latrines camp set up and take down.

Female hiker waits for pack horses to pass on the South Kaibab Trail in Grand Canyon National Park north of Williams, Arizona May 2011. The South Kaibab Trail starts on the south rim of the Colorado Plateau and follows a ridge out to Skeleton Point allowing for 360-degree views of the canyon then down to the Colorado River. At the Colorado River the trail connects with the North Kaibab trail as part of the Arizona Trail system, that crosses the state of Arizona from Mexico to Utah.

Horses and riders lead a string of pack animals near Sixty Lake Basin in King's Canyon National Park, California, USA, California, United States of America

Wild horses