Bottomless Lakes State Park
Blue-green cenotes formed where soluble rock collapsed, creating New Mexico’s first state park and an unexpected chain of aquatic habitats.
Artwork inspired by Peter Hurd
The lakes are sinkholes formed where groundwater dissolved subsurface gypsum and salt, causing overlying material to collapse. Their apparent color and depth led to the ‘bottomless’ name, but each basin has measurable geology, distinct salinity, and different public access.
Lea Lake is the developed swimming and recreation center; other lakes are primarily overlooks or protected habitats. Check water-quality and swimming notices before arrival, use only designated entry points, and do not assume every vivid pool is open for wading. Birding improves at quieter edges away from the beach.
- Founded
- 1933, New Mexico’s first state park
- Origin
- Collapse sinkholes
- Allow
- Half day
Quick guide
- Route question
- Lea Lake ↔ Mirror Lake overlooks
- Final evidence
- Pecos Valley geology
Bottomless Lakes State Park: begin and swim only
- Begin
- Use the overlook route to compare several sinkholes.
- Swim only
- Enter water at designated Lea Lake areas when open.
- Read color
- Connect depth, minerals, algae, and light.
- Look outward
- Scan desert margins and quiet water for birds.
Good to know
Swimming availability changes with season, staffing, weather, and water quality. Several sinkholes are observation-only and may have steep, unstable edges. Summer beach areas become crowded; arrive early and bring shade, while keeping food secured from wildlife.
Notice these
- Lea Lake
- Mirror Lake overlooks
- Pecos Valley geology