Geology

Panum Crater

Mono County, CA

Coordinate verified

Young rhyolite plug-dome volcano on the south shore of Mono Lake, formed only a few hundred years ago. A short trail climbs the pumice ring and plugs for close views of obsidian and pumice flows with Mono Lake and the Sierra crest as backdrop—one of the clearest roadside volcanic classrooms on the US-395 desert edge.

Field facts

RegionMono County, CA
Coordinates37.9297, -119.0446
AccessSigned dirt spur from CA-120 east of US-395 / south of Lee Vining; short hike into crater
Managing agencyUSFS / Mono Basin National Forest Scenic Area context
GNISfeature_id 264493 Crater, Mono
Feature classRhyolite plug dome / pumice ring

Nearby locations

Nearby amenities

Public recreation data — BLM & Recreation.gov (RIDB). Verify current access, fees, and seasonal closures before traveling.

Map preview

Explore the area

The interactive map and its tiles load only when requested.

Plan ahead. Leave no trace. Verify current access before traveling.