Obsidian Dome

The Obsidian Dome Loop Road offers a moderate 5.6-mile (9.0 km) touring cycling adventure, gaining 563 feet (172 metres) in about 56 minutes, through a landscape shaped by ancient volcanic activity. You'll cycle past the striking Obsidian Dome, a hill made of black volcanic glass, with views extending to the Long Valley Caldera and June Lake. While much of the route is firm gravel, be ready for challenging sections of deep, sandy pumice that demand a bit more effort.

This route is particularly enjoyable for cyclists on fat bikes or mountain bikes, as the varied terrain, especially the sandy pumice, can be tough for standard touring bikes. There's no specific parking information provided, but planning your ride for good weather will ensure the best experience. Remember that collecting any rocks or obsidian from this unique geological site is not allowed.

The area's volcanic history is truly fascinating; the Obsidian Dome, along with Glass Creek and Deadman Dome, erupted around 1350 CE. This makes the route more than just a ride, it's a journey through a significant geological landmark within the Inyo National Forest, offering a chance to see large formations of volcanic glass and pumice.