Approximate location — plotted from published sources, not a site visit, and not a guarantee of access.
Primitive rock-walled geothermal soak in Kaiser Spring Canyon / Warm Springs Wash country off US-93 between Wickenburg and Wikieup. Short canyon walk from a signed dirt turnoff reaches a free BLM-land pool (~95–100°F typical) with narrows and desert canyon scenery; clothing-optional etiquette is traditional at the pool.