Located at the northern end of Mosquito Lagoon, Turtle Mound is one of the largest shell middens on the Florida coast. It stands around 50ft high and consists of 1.5 million bushels (53 million liters) of oyster shells, the remains of an ancient Indian civilization that existed on these shores for five centuries prior to European contact. It can be reached via hiking trails from Apollo Beach and offers panoramic views over the park and ocean.