Florida Caverns State Park
Marianna, FL, 65°F inside, from $16
A prehistoric spring inside a dry cave, where you snorkel or scuba dive in clear 72°F water under a hole in the cave roof. There's also camping, cabins and an RV park.
The story
The current owners bought the cave in 1993 and turned what had been a simple dive site into an attraction. Fossils of extinct Pleistocene animals have been found here. According to the owners, the name comes from early settlers who saw steam rising from the opening on cold mornings and decided the devil lived there.
History source: devilsden.com.
What you'll see
- Stalactites above the water
- Fossil beds
Tickets and timing
- Hours
- Open 364 days a year (closed Christmas Day). Mon–Thu 9 am–4:30 pm; Fri–Sun 8 am–5 pm.
- Booking
- Snorkeling requires a reservation; scuba diving is first come, first served.
Getting around underground
- The walk
- The only way in is a narrow staircase that leads straight into the water.
Dogs, weather and what to wear
- Dogs
- Not allowed on the property except in the RV park. Service animals are allowed, but not in the spring.
- Temperature
- 72°F / 22°C water, year-round
Good to know
- Minimum age
- Children must be 6 or older.
- Photos
- Phones, cameras and GoPros are allowed in the water.
- Food and drink
- Snacks and drinks at the gift shop. No alcohol during business hours.
- Wildlife
- Fish and turtles live in the spring; sunscreen isn't allowed in the water to protect them.
- On site
- gift shop, snacks, cabins, RV park, tent camping, heated pool, picnic tables, pavilions
Getting there
5390 NE 180th Ave, Williston, FL 32696
Directions in Google MapsDistances are straight-line from each city center.
Questions people ask
How cold is it inside Devil's Den Prehistoric Spring?
72°F / 22°C water, year-round.
Are dogs allowed at Devil's Den Prehistoric Spring?
Not allowed on the property except in the RV park. Service animals are allowed, but not in the spring.
Do you need to book Devil's Den Prehistoric Spring in advance?
Snorkeling requires a reservation; scuba diving is first come, first served.
Is there a minimum age for Devil's Den Prehistoric Spring?
Children must be 6 or older.
Where is Devil's Den Prehistoric Spring?
5390 NE 180th Ave, Williston, FL 32696
Listed in: caves with camping or lodging
Checked on 2026-10-23 against devilsden.com (home, about and FAQ pages). Prices and hours change, so confirm on the official site before you drive out.