California · Rock climbing · Mammoth Lakes

Geothermal Boulders

Geothermal Boulders is a bouldering crag in California with 4 routes.

4 routes
V0 – V1-
Bouldering

Is Geothermal Boulders open right now?

Alert in the area

The Forest Service lists 4 alerts for Inyo National Forest.

As of · Source: USFS · Inyo National Forest. Agencies don't list every closure — check before you go.

Best time to visit Geothermal Boulders

Best months: May–September. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    41° / 17°

  2. Feb

    41° / 18°

  3. Mar

    45° / 22°

  4. Apr

    51° / 27°

  5. May

    60° / 35°

  6. Jun

    70° / 42°

  7. Jul

    78° / 49°

  8. Aug

    77° / 47°

  9. Sep

    71° / 40°

  10. Oct

    61° / 30°

  11. Nov

    49° / 23°

  12. Dec

    41° / 17°

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Mammoth Lakes Rs, CA, 2.4 mi away at 7,804 ft. This station doesn't record snowfall. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Geothermal Boulders is a bouldering area in the Mammoth Ranger District of Inyo National Forest in California, on city land. It sits among a cluster of bouldering spots, with 5th Boulder and 7th Boulder each about 0.1 mile away. The climbing here is all bouldering, with 14 routes in total. Grades run from V0- to V2, with most around V0 and V0+. Problem A is the easiest at V0-, and Problem D is V1. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at Mammoth Lakes show July highs around 78°F and lows near 49°F, while winter highs stay around 41°F with lows in the teens. Nearby, Indian Caves Vis and Valentine Lake are both hikes within about 1.6 miles. Sherwin Creek campground is about 1.6 miles away, and Pine Glen campground is about 2.2 miles away.

Routes (4)

Keep exploring — more climbs worth the drive

Sector FPhoto: Ken Lund, CC BY-SA 2.0 (via Flickr)

Sector F

~1 min drive

Sector F is a California bouldering crag with 8 routes.

Sector CPhoto: Ken Lund, CC BY-SA 2.0 (via Flickr)

Sector C

~1 min drive

Sector C is a 5-route bouldering area in California with routes spanning 5 difficulty grades.

Sector APhoto: Ken Lund, CC BY-SA 2.0 (via Flickr)

Sector A

~1 min drive

Sector A is a California bouldering crag with 18 routes across 6 grades.

* Mammoth Lakes BoulderingPhoto: GSEC, CC BY 2.0 (via Flickr)

* Mammoth Lakes Bouldering

~9 min drive

Mammoth Lakes Bouldering in California has 4 bouldering routes.

Sister BoulderPhoto: inkknife_2000 (14 million views), CC BY-SA 2.0 (via Flickr)

Sister Boulder

~10 min drive

8 bouldering routes at Sister Boulder in California, grades 5.10a to 5.12c.

Ugly Duckling AreaPhoto: Jane S. Richardson (talk · contribs), CC BY-SA 3.0 (via Wikimedia Commons)

Ugly Duckling Area

~10 min drive

Ugly Duckling Area in California has 9 bouldering routes across 8 grades.

T J SlabsPhoto: inkknife_2000 (14 million views), CC BY-SA 2.0 (via Flickr)

T J Slabs

~10 min drive

T J Slabs in California has 6 bouldering routes with 5 difficulty grades.

Huggy Bear AreaPhoto: Jane S. Richardson (talk · contribs), CC BY-SA 3.0 (via Wikimedia Commons)

Huggy Bear Area

~10 min drive

Huggy Bear Area is a California climbing crag with 6 routes.

Seam AreaPhoto: Jane S. Richardson (talk · contribs), CC BY-SA 3.0 (via Wikimedia Commons)

Seam Area

~10 min drive

Seam Area is a California climbing crag with 8 routes.

The Ravine

~1 min drive

Ravine, The in California has 4 bouldering routes.