Weekend trip to Devil's Den Prehistoric Spring in Williston Florida. The spring has a small campground for tent camping, some cabins and around 30 RV sites. Some are pull through, most are back in. most sites have water, electric and sewer hookups, there are a few with water, electric and no sewer. The sites are well nicely covered with trees. The ground is dirt and lots of leaves and pine needles which makes for happy living area for bugs, you know the kind i mean, so bring some roach spray to keep them out. I didnt have a problem with them coming in but they are there. You must have a reservation to swim in the spring. They only let a certain amount in at a time. Your reserved time is for an hour and a half. It is a spring so the water is very cold (72 degrees) but it doesnt take long to get used to it. While there the water was a little murky due to rain and maybe the divers down deeper in the water. There were alot of divers there and you can get certified here as well. They do have a pool and bathhouse, but I did not get any shots of the bathhouse. There is a large manmade pond which looks like it was a swimming area back in the day. Lots of fish and ducks. There is a small trail that goes around the pond. Next door there is a botanical garden with a separate entrance fee. Nice place to stop for the weekend.