The park has a museum of all the old artifacts that have been collected from the Indain Mounds with several display cases. There are acouple Indain Mounds you can walk around & even stairs & a platform on the top of one.
From Crystal River head north to State Park St, right past Denny's Rest. Then turn left onto Museum Pt. & take to the end.
http://www.tripleblaze.com/trail.php?c=3&i=4819