Hike #36: 52 Hike Challenge: Ponce Preserve, Ponce Inlet. The 41-acre Ponce Preserve, the largest park in Ponce Inlet, stretches from the Atlantic Ocean to the Halifax River and encompasses the Green Mound Archaeological Site (ancient Native American midden). The amazing live oak at the base of the Green Mound is estimated to be more than 350 years old. A highly recommended hike! Distance: 2.4 miles.