Camp Helen State Park is bordered on three sides by the Gulf of Mexico and Lake Powell, one of the largest coastal dune lakes in Florida. Coastal dune lakes are extremely rare worldwide; in the United States they occur only along the Gulf Coast. Prehistoric middens and mounds indicate that humans lived in the area more than 4,000 years ago. From 1945 until 1987, Camp Helen was a company resort for employees of an Alabama textile mill and some of the buildings are now being restored.