Mercey Hot Springs California – Geothermal Pools

At Mercey Hot Springs, you can soak in mineral-rich geothermal water in outdoor tubs or a mineral pool. The water comes out of the ground at about 112°F and is mixed with cooler water so it’s comfortable to enjoy. You can choose outdoor tubs, private bathhouse rooms with a quiet, vintage vibe, or the cooler mineral swimming pool for a refreshing dip.

There is also a dry sauna that pairs nicely with the soaks.

The water is slightly alkaline and has a mild sulfur smell at first, which fades quickly, and it feels smooth on your skin. The property also has a clothing-optional deck, shaded benches, clean restrooms and changing areas, and dark skies perfect for stargazing.

Mercey sometimes hosts special events, like the Casa Tule “Food is Medicine” weekend with yoga, meditation, sound healing, vegetarian meals, and stargazing. Lodging and event spots need to be booked in advance.

There's plenty to do on the property and in the nearby Little Panoche and Panoche Hills area.

Stargazing: Dark skies, Milky Way on clear nights. Bring layers; nights can fall into the 40s–50s°F in winter and 60s–70s°F in spring/fall.

Birding and wildlife: Hawks, owls, quail, foraging sparrows, and wild rabbits. Sunrise and sunset are best.

Easy walks: Short gravel and dirt paths around the resort and gentle hills nearby.

Hungry? Pack food and plenty of water. The closest full services are in Mendota, Los Banos, and Hollister, plus I‑5 stops. Think simple picnic, cooler, and snacks after your soak.

Rockhounding at Mercey Hot Springs and nearby

On Mercey Hot Springs' private land, you may collect small surface finds in the dry wash area only, and you do not need special written permission as long as you follow resort rules and stay within posted boundaries.

The dry wash runs through or just beyond the resort, and parts of it are inside the resort's property; staff will point out the exact stretch that's open for casual collecting when you check in. Collecting elsewhere on the resort (hillsides, landscaped areas, around cabins/tubs) isn't allowed.

Keep it light: pick up small pieces of jasper, quartz, jade, and occasional petrified wood already loose in the wash - no digging, chisels, or shovels.

If you want a broader hunt, drive to Panoche Hills Recreation Area (BLM) and search washes for serpentine, multi‑color jasper, agate, and quartz.

Note that Panoche Hills has seasonal closures for wildlife and fire risk. Check the current BLM status before you go, bring plenty of water, sun protection, and stay on signed roads.

The resort has rustic cabins, tent camping, and RV sites, all with access to the hot springs.

Cabins are cozy with historic touches, and one has a kitchen.

Tent and RV sites are simple and comfortable, with group options available.

Bring towels, robes, sandals, and extra water, and plan soaks for early morning or evening when temperatures are cooler.