Glass Flow / Obsidian Dome RD (FR 02S10) in CA

Road corridorInyo NF, Mono Lake Ranger District

11 mi from Mammoth Lakes

Maps 8,435 ft

Camping permission not confirmed

Camping is limited to designated sites on part of this road; the exact stretch is not confirmed.

Stay limit: 14 consecutive days · 28 days total per calendar year · then move 10 mi

VerizonMARGINAL

AT&TNONE

T-MobileUSABLE

StarlinkGOOD

Difficult

5.3 of this road’s 6 miles are maintained for high-clearance vehicles, dirt the whole way.
Near Hartley Springs.
Terrain estimates suggest level ground alongside most of this road; parking areas are not verified.
Winds through 7 switchbacks.

Known camping along this road at mile 4.1: .

Limited privacy

Limited separation from through roads or other sites here, with the nearest through road 0.1 miles off.
San Joaquin Mountain stands 3,165 ft above the map pin, 5.2 miles southwest.
Hartley Springs lies 0.4 mi off.

Within a 10-mile radius of any undeveloped campsite for a period longer than 14 consecutive days… Anywhere within the Inyo National Forest for more than 28 total days during a calendar year.
On part of this corridor: Camping: Designated sites only.
Camping rules

October normals 32–59°F, 1.3″ precipitation. Monthly averages, PRISM 1991–2020.

Glass Flow / Obsidian Dome RD (FR 02S10) in CA -- Camping Rules & Access