Why Yosemite Still Relies on Mules After 100 Years

While modern technology may be changing how parks operate, some traditions in Yosemite National Park remain timeless—like the use of working mules. For over a century, mules have helped rangers manage the park’s rugged 1,200 square miles, and today, they’re just as essential as ever.

Yosemite maintains a team of around 90 mules and horses to support park operations during the busy summer months. These animals help pack in supplies for trail crews working on the park’s extensive 800-mile trail system and carry out compost and waste from remote backcountry toilets.

“If you’ve used the bathrooms in the Vernal/Nevada fall corridor or just like clean water in the Merced, thank a mule,” the park recently noted.

In addition to hauling gear and waste, the mules are used in search and rescue missions to transport injured hikers, and they assist with front-country patrols in Yosemite Valley—helping with everything from traffic management to guiding lost visitors.

After a peaceful winter break on pasture, Yosemite’s hardworking mule team is back in action. Quietly but powerfully, they continue to play a crucial role in keeping one of America’s most iconic national parks running smoothly.