Both are privately run, both sit within about an hour of Gainesville, and both are famous for water that looks unreal. That is where the similarity ends. Devil’s Den in Williston is a collapsed limestone dome you climb down into — a single, small, cave-like room where sunlight pours through a hole in the ceiling onto Pleistocene fossils, and where every visitor has to snorkel or dive on a reserved 90-minute slot. Ginnie Springs near High Springs is the opposite scale: seven named springs spread across real acreage on the Santa Fe River, open swimming, tubing, cave diving, and riverside camping, with no reservation needed just to get in. One is a tightly managed once-in-a-trip experience; the other is a day (or a weekend) you assemble yourself.
Pick Devil’s Den if: you want the most otherworldly swim in Florida and your kids are 6 or older. Pick Ginnie if: you want room to roam, cheaper family math, camping, or younger kids in the group.
Quick answer
- Pick Devil’s Den if the goal is the experience itself — a cenote-style cave with fossils in the walls — and you’re happy to book a slot, snorkel with a mask on for the whole session, and be in and out in about 90 minutes.
- Pick Ginnie if you want a full day of variety: seven springs, an easy sandy entry for kids, tubing on the Santa Fe, an accessible first cavern dive, and the option to camp at the water’s edge.
Both in one trip? Yes — they’re roughly 40 miles apart, about an hour by car. Do Devil’s Den first thing, then Ginnie in the afternoon.
They sit about 33 miles apart, which makes doing both in one trip realistic. Here is how they actually differ.
| Devil's Den | Ginnie Springs | |
|---|---|---|
| Our score | 8.5 / 10 | 8.9 / 10 |
| Entry fee | $30 snorkel / $48 dive (verified) | $25/adult season, $20 off-season (verified, Mar 2026) |
| Hours | Mon-Thu 9am-4:30pm, Fri-Sun 8am-5pm (verified, devilsden.com) | 8am – late (private park) |
| Magnitude | Subterranean spring | 2nd magnitude (7 springs) |
| Nearest town | Williston | High Springs |
| Best for | The most otherworldly swim in Florida | Cave diving and riverside camping |
| Good for | Scuba Diving, Snorkeling | Camping, Kayaking, Scuba Diving, Snorkeling, Tubing |
| When to go | The first booking slot of a weekday morning. Light beams through the ceiling opening are strongest in the middle of the day, but the water is emptiest at opening. | Weekdays, any season, if a calm family visit is the goal — this is the spring where day-of-week matters more than time-of-year. Regular season (roughly spring through fall) for full pricing and full crowds; off-season for a quieter, cheaper visit if the weather cooperates. |
| Current conditions | Open · reservations required, weekends selling out · fees re-verified against devilsden.com Sept 2026 (walk-through pass now $15, was previously listed as $7) | Open · weekend capacity common in summer |
Devil's Den
Devil's Den is a prehistoric spring inside a collapsed limestone cave — you descend a wooden staircase into the earth and surface-swim beneath a skylight fringed with hanging vines while sun rays cut through the water. There is nothing else like it in Florida, and the…
Local tip: Book the first morning slot: fewest swimmers, best light rays, clearest water. Water is 72°F in a shaded cave — a thin wetsuit (rentable) makes the visit far more comfortable. Bring your own gear if you have it — snorkel, mask, fins — since renting adds real cost on top of admission; one family reported paying around $100 total for a family of four once rentals were factored in. If you have underwater flashlights, bring them; the light beaming down through the karst window is beautiful, but a flashlight adds a lot when you're looking at the fossils in the walls. Weekdays after Memorial Day are reported as noticeably calmer than weekends, worth targeting if your schedule allows it. Reviewers consistently flag the same two friction points: the staircase down into the cave is steep and can feel intimidating with gear in hand, so budget a few extra minutes and take it slow rather than rushing; and the strict no-flotation, mask-snorkel-fins-on-the-whole-time rules catch first-timers off guard who expected something closer to a casual swim spot. Multiple reviews mention the changing rooms and lockers as basic but functional, and recommend bringing your own lock since not everyone finds one available on busy days. Regulars say the underwater visibility is noticeably better in the morning before dozens of fins have stirred up sediment near the entry stairs, reinforcing the value of booking that first slot. People who've done both note the cave feels genuinely small and intimate compared to open springs — there's no wide area to spread out, so a full 90-minute slot with a crowded group can feel closer and busier than photos suggest.
Full guide, fees & map →Ginnie Springs
Ginnie is the famous private park on the Santa Fe River: seven springs, some of the clearest water in the state, and cave systems that draw divers from around the world. Jacques Cousteau reportedly called this water 'visibility forever,' and on a good day it earns…
Local tip: Springs here range from a manageable 8-10 feet down to 25-30 in the deeper spots, so know which spring you're at before letting kids swim unsupervised. One thing that surprises first-timers: absolutely no pets are allowed, not even service animals — people get turned away at the gate regularly, so don't plan around bringing the dog. Go on a weekday if you can. Reviews are consistent that the difference between a Tuesday and a Saturday here is night and day — a calm family float versus a genuinely loud scene into the night. Trip reports and forum posts describe the same logistics over and over: the parking areas nearest Ginnie Spring itself and the Ballroom cavern fill first on summer weekends, so arriving right at the 8am open (not mid-morning) buys you the closest spot and the clearest, least-stirred-up water before the crowd gets in. Several reviewers specifically call out the walk between the far lots and the water as longer than people expect for a first visit, so a wagon or cart for coolers and gear is a recurring recommendation, not a luxury. Visitors who've tubed the adjoining Santa Fe River consistently note it's a different experience from the spring itself — tannic, dark, and much warmer than the spring water, so don't expect the same clarity once you drift off the spring run and onto the river proper. Divers describe the Ballroom as an easy, confidence-building first cavern swim thanks to the ambient light from the entrance, while first-timers who wander toward Devil's Eye or Devil's Ear without cave training consistently get turned back by staff — the boundary is enforced, not a suggestion. Regulars say the general store gets picked over by afternoon on busy weekends, so buy ice and drinks on the way in rather than counting on restocking mid-day, and that cell signal is spotty enough across the property that a paper map or a screenshot of the campground layout saves real frustration.
Full guide, fees & map →Where they actually differ
Fees and what a family of four really pays
Devil’s Den snorkeling is $30 per person for a 90-minute reserved session, which includes a day pass to the John’s Oasis grounds. Booking works as a $5 per-person non-refundable deposit online, with the remaining $25 due at check-in. If you don’t own a mask, snorkel and fins, rental is a $15 add-on per set. For two adults and two kids, that’s $120 with your own gear, and up to $180 if all four of you rent. Scuba is $48 per person and requires Open Water certification. A $15 walk-through pass lets a non-swimmer see the grounds without getting in.
Ginnie prices by the person and by season. Adult day admission is $25 from March through October and $20 from November through February; kids 4–12 are $6 in season and $5 off-season; ages 3 and under are free. Two adults and two school-age kids come to about $62 in season or $50 off-season — roughly half of Devil’s Den. Diving is separate: the park lists $36 for a certified diver’s day pass and $28 for a cave-certified diver, with a $440 annual cave pass. Camping is priced per person per night ($40/adult in season, $30 off-season, and that includes the day’s admission), so a weekend adds up quickly for a big family.
Crowds, reservations and capacity
This is the sharpest operational difference. Devil’s Den requires a reservation for snorkeling, and weekend slots sell out. People have driven hours and been turned away at the door, so treat the booking as non-negotiable. The upside of a hard cap is that the cave never gets truly mobbed — but it is small, and a full 90-minute slot can feel snug. Book the first morning slot of a weekday: the water is clearest before dozens of fins stir up the sediment near the entry stairs, and weekdays after Memorial Day are noticeably calmer.
Ginnie takes no entry reservation for day visitors, but its own conditions note flags weekend capacity in summer. The lots nearest the main spring and the Ballroom cavern fill first, and passes stop selling at 3pm, so arriving at the 8am open buys you both a close parking spot and the clearest water. Weekdays matter more here than the time of year: a Tuesday is a calm family float, a Saturday can be a loud scene, though a new April 2026 alcohol policy confines drinking to your own campsite boundaries.
The water and what you can do in it
Devil’s Den is deliberately restrictive. There’s no casual swimming — everyone in the cave must snorkel or dive, mask, snorkel and fins stay on the whole session, no flotation devices are allowed, snorkelers are capped at 8 feet, and free-diving is off limits. The surface opening is about 120 feet across and the water reaches roughly 54 feet, and the fossil walls (dire wolves, mastodons, saber-toothed cats, ground sloths) are the payoff. Sunscreen of any kind is banned in the water to protect the fish and turtles that live there. Non-swimmers who just dip in tend to last only 15–20 minutes, so set expectations for cold-water-averse guests.
Ginnie is about variety. The main Ginnie Spring has a wide, sandy, gently sloping entry that’s easy for kids; Devil’s Eye and Devil’s Ear (not to be confused with Devil’s Den) are narrower with stronger current. Depths run from 8–10 feet in gentle areas to 25–30 in the deeper spots, and the Santa Fe River next door is tannic and noticeably warmer, ideal for tubing. For divers, the Ballroom is open to any certified open-water diver with a light, while the Devil’s Spring System is cave-certified only, and staff enforce that line.
Kids, dogs and budget travelers
Children under 6 are not allowed in the Devil’s Den cave, no exceptions, even strong swimmers. Our Ginnie notes list no comparable age cutoff for the main spring, so it’s the more realistic choice if your group includes a preschooler. Neither allows dogs: Devil’s Den says no, and Ginnie bans pets of any kind, including service animals, enforced at the gate. For budget, Ginnie wins on per-person cost; Devil’s Den is best treated as a splurge experience. Both are 72°F year-round, which feels bracing to warm in the cave but especially cold if you’re mostly sitting still.
Facilities and staying overnight
Devil’s Den has an on-site dive shop, gear rental, restrooms and changing rooms (bring your own lock), a swimming pool for non-snorkelers, and lodging on the property — an RV park, four cabins, and a tent area. The Ivy House restaurant on the grounds is worth a stop. Ginnie is a full private-park operation with bathhouses reviewers call clean, a dive shop with air fills, a general store, a small deli, tube and kayak rentals, and 123 water-and-electric sites plus first-come tent sites, several right on the river. Pink Flamingo Diner, about 10 miles out, has a full menu and mini-golf.
Best season
Because the water is constant, timing is about crowds, not comfort. Devil’s Den is best on the first weekday slot; the light beams are strongest around midday, but the water is emptiest at opening. Ginnie is best on weekdays in any season, with off-season (November–February) giving lower prices and quieter water if the weather cooperates.
Doing both in one trip
The drive is roughly 40 miles, about an hour. The smart order is Devil’s Den first: hours are 9am–4:30pm Monday to Thursday and 8am–5pm Friday to Sunday, and the earliest slot gets you clear water and an early exit. Head to Ginnie afterward, and keep in mind that its day passes stop selling at 3pm, so don’t dawdle. If diving or camping is part of the plan, give Ginnie its own day.
Our pick
Pick Devil’s Den if you want a genuinely unique swim — the closest thing Florida has to a Mexican cenote — and everyone in your group is 6 or older, comfortable with cold water, and fine with strict rules and a booked time slot.
Pick Ginnie if you want flexibility, a lower family price, room for younger children, cave-diving or camping options, or simply a day where nobody is watching the clock. It costs less, offers far more to do, and asks less of you in advance.
For a first-time family with a wide age range, Ginnie Springs is the easier win. For a couple, a group of teens, or snorkelers who want a story to tell, Devil’s Den is the more memorable stop.
Weighing other diving-focused options? See our Devil’s Den vs Blue Grotto and Ichetucknee vs Ginnie comparisons.
FAQs
Do you need a reservation for Devil’s Den or Ginnie Springs?
Devil’s Den, yes — snorkeling requires an online reservation, and weekend slots sell out. Ginnie doesn’t require one for day-use entry, though summer weekends can hit capacity, so arriving at the 8am open is smart.
Can young kids go to Devil’s Den?
Not under 6. Children under 6 are not permitted in the cave, regardless of swimming ability, and the rule is confirmed on the operator’s own booking FAQ. We don’t have a posted minimum age for Ginnie’s springs, but the swifter Devil’s Eye and Devil’s Ear areas are better for older children.
Which is cheaper for a family of four?
Ginnie. Two adults and two kids ages 4–12 run about $62 in season ($50 off-season). Devil’s Den is $120 for four snorkelers before any gear rental, and $15 per set of gear adds up.
Can you dive at both?
Yes. Devil’s Den scuba is $48 per person and requires Open Water certification. Ginnie lets certified open-water divers use the Ballroom cavern with a light, while the Devil’s Spring System is for cave-certified divers only.
Can I bring my dog?
No at both. Devil’s Den lists no dogs, and Ginnie bans all pets, service animals included.
Which has camping?
Both. Devil’s Den offers an RV park, four cabins and tent camping on the property. Ginnie has a much larger campground, with 123 water-and-electric sites and first-come tent sites, some right on the river.