Tioga & Glacier Point Roads Closed for the Winter
The Tioga Road (Highway 120 through the park) and Glacier Point Road are closed due to snow; they usually reopen late May or June. You can check on current road conditions by calling 209/372-0200 (press 1 then 1). More »
Gary M. Stolz/U.S. Fish and Wildlife
Yosemite National Park is home to only one rattlesnake–the Northern Pacific rattlesnake (Crotalus oreganus oreganus). Rattlesnakes, an important component of the park’s ecosystem, help control rodent populations. Predators, whether bobcats or coyotes or snakes, control prey that can grow out of balance otherwise.
Because rattlesnakes are venomous, visitors should educate themselves on identification and precautions. The good news: Deaths are very uncommon, and, in fact, no one has ever died from a bite in Yosemite (except for one questionable account in 1931). In addition, 30 percent of adult rattlesnake bites have no venom injected.
Follow this advice should you encounter a rattlesnake:
If a bite occurs:
Note: Non-venomous snake species exist, too, in Yosemite such as kingsnakes and yellow-bellied racers. Some species are rattlesnake lookalikes, such as the gopher snake that mimics the rattler by hissing, broadening its jaw to look triangular and shaking its tail in leaves.
Did You Know?
The indigenous people of Yosemite Valley have used fire as a tool for thousands of years. Fire was used to encourage the growth of plants used for basket making and to promote the growth of the black oak--a sun loving species--and a staple food source for American Indians from this region.