Wild Willy's Hot Springs (Crowley)
Wild Willy's Hot Springs (Crowley) is a primitive thermal soaking spring located in Mono County, California Hot Springs near Mammoth Lakes. Average water soak temperature is 102°F with a geothermal source temperature of 105°F. Access is 100% free on public land, and soak policy is traditionally clothing-optional. Explore nearby springs with our GPS Springs Near Me Finder.
Seasonal Soaking & Best Time to Visit
While geothermal pool temperatures remain a constant 102°F year-round, outdoor ambient temperatures fluctuate significantly across California. Late spring through autumn offers the most comfortable road access.
Fact Sheet & Geothermal Specifications
| Average Soak Temp | 102°F |
| Geothermal Source Temp | 105°F |
| Hiking Distance | 0.25 miles (easy) |
| Access Fee | 100% Free Public Access |
| Clothing Policy | Clothing Optional |
| Pet Policy | Dog Friendly (Leashed) |
| Geothermal Data Citation | USGS Geothermal Data Portal |
| Public Land Management | California BLM Public Land Office |
Detailed Description
Expansive heart-shaped natural pool set on an elevated wooden boardwalk in the Long Valley Caldera with 360-degree mountain views.
Directions & Trailhead Access
Off US-395 near Mammoth Lakes, take Benton Crossing Rd, cross 3 cattle guards, turn right on dirt road.
Frequently Asked Questions: Wild Willy's Hot Springs (Crowley)
Is Wild Willy's Hot Springs free?+
Yes, Wild Willy's Hot Springs is 100% free to visit on public BLM land near Mammoth Lakes, California.
What is the heart pool at Wild Willy's Hot Springs?+
Wild Willy's features a famous heart-shaped thermal pool that is typically the deepest and hottest pool, with temperatures ranging from 95°F to 105°F and views of the Sierra Nevada.
How far is the hike to Wild Willy's Hot Springs?+
The hike is a flat, easy 0.25-mile walk along an elevated wooden boardwalk leading directly from the parking lot.
Is Wild Willy's Hot Springs clothing optional?+
Yes, Wild Willy's is a clothing-optional destination where nudity is common and accepted.
Where to Stay Near Wild Willy's Hot Springs (Crowley)
Looking for accommodations near Mammoth Lakes, CA? Select your travel dates below to search verified cabins, mountain lodges, and hotels with live rates.
The Village at Mammoth
Sierra Nevada Resort & Spa
Mammoth Mountain Inn
Community Soaker Reports
Verified Traveler ReviewsWild Willy's Hot Springs (Crowley) is catalogued in the USGS Geothermal Resources Survey (Circular 790) as a geothermal resource in Mono County, California. Measured source temperature: 105°F. Average soaking pool temperature: 102°F. Land type: Dispersed Public Land (BLM / USFS). No entrance fee.
Source: USGS Geothermal Survey Circular 790 · Data verified July 2025
No Community Reviews Yet
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