Slab City Hot Springs (Barraza Hot Springs)
By the HotSpringsFind editorial team · How we compile records · Reviewed September 2026
Slab City Hot Springs (Barraza Hot Springs) is a primitive hot spring listed near Niland, California. Reported soak temperature: 100°F. See the visit fact sheet.
Current status
A genuine but unofficial geothermal pool (~104°F) at the entrance to Slab City near Niland — a circular, community-maintained pool of murky sulfur water on former Camp Dunlap state land; people do soak here, but it's an unmanaged off-grid community site with questionable sanitation, and police have ticketed nude bathers, so wear a suit and set expectations accordingly.
Checked September 2024 · based on recent visitor reports · 6 sources ↓
Before you go
- Status: Tolerated access — verified below — confirm via MDPI GeoHazards journal (2024) — Niland Moving Mud Spring study references 'Slab City Hot Spring' with isotope values consistent with locally recharged geothermal water (confirms genuine geothermal origin).
- Cost: Reported free access — fees and permits can change, confirm before visiting.
- Getting there: No verified hike distance on record — confirm the route and road conditions.
- Water: Reported soak temperature 100°F — always test the water before entering.
- Rules: Reported clothing-optional; pets reported not allowed — confirm current rules.
- Conditions: check weather, fire closures, and land-manager alerts the week you go — mountain access changes seasonally.
- Reservations/permits: None — no official oversight; tolerated informal use on state land.
- Best time to go: October-April daytime; ask locals at the Slab for the spring's current state before seeking it out.
- Clothing reality: Customary use is clothing-optional, BUT police have ticketed Slab City bathers for nudity — wearing a swimsuit is the safe and recommended choice. No official policy exists (unmanaged site).
- Cell service: ok — download maps and tell someone your plan.
- Accessibility: Drive-up desert terrain (sandy tracks off paved Beal Rd); no facilities, no defined path — not accessible.
- Unofficial, community-maintained site inside the Slab City off-grid squatter community (former Camp Dunlap WWII Marine base, state-owned land) — no agency manages the spring; conditions change without notice
- Water quality is dubious — murky/muddy with a weak sulfur smell and visible gas bubbling; sanitation 'questionable' per visitors; soak at your own risk, keep head out (warm untreated water = amoeba risk), don't drink it
- The nearby 'cold shower' cistern is spring runoff — effectively used bath water, high in iron/sulfur
- Police HAVE cited people for nude bathing here — wear a suit
- Slab City has NO potable water and no services — bring ~5 gal/person/day in warm months; summer hits 120°F; best Oct-Apr
- Adjacent canals carry agricultural runoff (pesticides) — do not swim in canals; the north canal has lethal turbines and taking its water is a felony
- This is someone's front yard — ask around, be respectful, don't photograph residents without permission; near Salvation Mountain/East Jesus
- Pool is ~104°F, circular, partially concrete-rimmed with an old faucet, draining via a south-side ditch; mechanisms likely similar to the nearby Niland 'Moving Mud Spring' geothermal/geohazard features
- Hazard: Untreated murky geothermal water of unknown sanitation — Naegleria-type amoeba risk in any warm untreated water; never submerge head
- Hazard: Extreme summer heat (120°F) and no potable water anywhere on site
- Hazard: Unofficial site in an off-grid community — no emergency services, conditions unregulated
- Hazard: Irrigation canals nearby carry contaminated ag runoff; north canal has fatal intake turbines
- Hazard: Gas-bubbling geothermal source similar to regional mud-pot/geohazard features
About this spring
A single circular, partly concrete-edged pool of naturally gushing geothermal water (~98-104°F) at the edge of Slab City, the off-grid community on the former Camp Dunlap Marine base northeast of Niland. Informally maintained by residents with no facilities or official management. Water quality is questionable (muddy, sulfur). Police have ticketed bathers for nudity despite clothing-optional custom. Summer heat to 120°F.
The spring sits near the entrance to Slab City, the celebrated off-grid squatter community occupying the concrete slabs of Camp Dunlap, a Marine Corps training base built in 1942 whose buildings were demolished by 1956; the land is owned by the State of California but occupied by squatters. The pool is a circular, partly concrete-rimmed pit fed by a naturally gushing hot well — measured around 104°F — with gas visibly bubbling at its center and a faint sulfur odor; the water is muddy and of questionable sanitary condition. Outflow drains through a ditch to a culvert-fed 'shower box' a few hundred yards downstream that residents call Slab City's only shower. The source's origin is uncertain, but the site sits on the San Andreas fault zone amid intense geothermal activity — the wandering Niland Geyser mud volcano and the Davis-Schrimpf seep field lie nearby. Although bathing here is customarily clothing-optional, police have ticketed nude bathers. Free, unmaintained, and unmarked — more an anarchic roadside curiosity than a destination soak.
Directions & trailhead access
From Niland take Beal Road northeast ~3-4 miles into Slab City; the spring sits near the community entrance by the water tanks.
California geothermal context
California spans several geothermal provinces: the volcanic Cascades and Modoc Plateau in the northeast, Sierra Nevada granite seeps along the eastern front, Mojave and Colorado Desert springs in the south, and the famously mineral-rich Big Sur coast. Fire season (roughly June–November) closes access to many backcountry springs without warning — always check for current fire restrictions.
What a primitive site means here
Primitive springs have no facilities: no changing rooms, no trash service, often no maintained road to the pool. Expect natural rock or gravel bottoms, water temperature that varies by spot and season, and other visitors who may treat the site informally. Pack out everything you bring, test the water before entering, and leave the pool cleaner than you found it.
Best time to visit
Year-Round (Best: May – October)Pool temperatures and access can change with weather and season. Outdoor ambient temperatures fluctuate significantly across California. Late spring through autumn offers the most comfortable road access.
Fact sheet
| Reported soak temp | 100°F |
|---|---|
| Source temp (historical) | 104°F |
| Trail access | Recorded coordinates — access unverified |
| Access fee | Reported free — verify locally |
| Clothing policy | Reported clothing-optional |
| Pet policy | Reported no pets |
| Geothermal data reference | NOAA Thermal Springs List (1980 archive) |
| Check land status | MDPI GeoHazards journal (2024) — Niland Moving Mud Spring study references 'Slab City Hot Spring' with isotope values consistent with locally recharged geothermal water (confirms genuine geothermal origin) |
Slab City Hot Springs (Barraza Hot Springs) FAQ
Is Slab City Hot Springs (Barraza Hot Springs) open right now?
A genuine but unofficial geothermal pool (~104°F) at the entrance to Slab City near Niland — a circular, community-maintained pool of murky sulfur water on former Camp Dunlap state land; people do soak here, but it's an unmanaged off-grid community site with questionable sanitation, and police have ticketed nude bathers, so wear a suit and set expectations accordingly. (Status based on recent visitor reports, last checked September 2024.)
Is Slab City Hot Springs (Barraza Hot Springs) free?
Slab City Hot Springs (Barraza Hot Springs) is listed as free to access in Imperial County, California. Fees and rules change — verify current status with the land manager before visiting.
What temperature is Slab City Hot Springs (Barraza Hot Springs)?
Slab City Hot Springs (Barraza Hot Springs) has a reported soak temperature of 100°F and a historical source temperature of 104°F in survey records. Historical data may not reflect current conditions — always test water before entering.
Is Slab City Hot Springs (Barraza Hot Springs) clothing optional?
Slab City Hot Springs (Barraza Hot Springs) is listed as traditionally clothing-optional in directory records. Confirm current rules before visiting, as policies change.
How do you access Slab City Hot Springs (Barraza Hot Springs)?
Public use of Slab City Hot Springs (Barraza Hot Springs) is tolerated rather than formally authorized — there is no reservation system. Follow posted rules and keep a low profile to preserve access.
Sources & references
- hotspringers.net — Slab City (Barraza) Hot Springs visit 09/22/2024: circular 104°F pool at Slab entrance, gas bubbling at center, weak sulfur, muddy/questionable sanitation, partial concrete rim + old faucet, south drainage ditch; clothing-optional noted — community · 2024-09
- The Dyrt — Slab City camping reviews: hot spring pool exists and is used; community-maintained informally; cistern 'cold shower' smells; 5G cell in many areas; no water/electric/sewer — community · 2025
- Slab City travel guide (Wikivoyage-derived): hot spring between two canals, police have ticketed nude bathers, 'cold shower' is spring runoff high in iron/sulfur, no potable water — bring 5 gal/person/day, summer 120°F — community · 2025
- MDPI GeoHazards journal (2024) — Niland Moving Mud Spring study references 'Slab City Hot Spring' with isotope values consistent with locally recharged geothermal water (confirms genuine geothermal origin) — official · 2024
- HotSpringAtlas — Slab City Hot Springs listing (updated 2026): undeveloped natural pools 98-104°F, free, best Oct-Apr — community · 2026
Additional references for this record; a source link does not guarantee current conditions.
Details above were verified against the named sources on their listed dates — conditions change, so recheck before traveling. · How we verify our data · Report a correction
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