Montezuma Hot Springs
Montezuma (Las Vegas) · San Miguel County
Concrete and rock pools right beside NM 65 near Las Vegas, on land owned by the United World College and looked after by the Friends of the Montezuma Hot Springs, a community nonprofit. It's free and open 6am to 10pm daily; stay past 10 and you're trespassing. The house rules are short and firm, banning nude bathing, drugs, alcohol, smoking, vaping and glass. The Friends don't run a website, so the posted rules are what you go by. Leave something in the donation box on site for the people who keep it open.
From Friends of the Montezuma Hot Springs (501c3), last checked 19 September 2026. A few details here came secondhand, so it's worth a call before you go.