American crocodiles, mangrove cuckoos, white-crowned pigeons, Schaus swallowtail butterflies, mahogany mistletoe, wild cotton, and 100 other rare critters and plants inhabit these 2,400 acres, sandwiched between Crocodile Lake National Wildlife Refuge and Pennekamp Coral Reef State Park. The park is also a user-friendly place to explore the largest remaining stand of the vast West Indian tropical hardwood hammock and mangrove wetland that once covered most of the Keys' upland areas. Interpretive signs describe many of the tropical tree species along a wide 1-mile paved road (2 miles round-trip) that invites walking and biking. There are also more than 6 miles of nature trails accessible to bikes and wheelchairs. Pets are welcome if on a leash no longer than 6 feet. You'll also find restrooms, information kiosks, and picnic tables. Rangers recommend not visiting when it's raining as the trees can drip poisonous sap.