Gillin's Beach, the center section, is known for petroglyphs that are carved into the rocks, though they are rarely exposed. Fossils of extinct birds have been found in sand dunes along the shoreline, including the Kauai Stilt-owl (Grallistrix auceps), a flightless rail, and three species of goose. Close to the beach is the paleontologically important Makauwahi Cave.
Gillin's Beach, specifically its central area, is famous for petroglyphs carved into rocks, though these are rarely exposed. Fossils of extinct birds have been found in sand dunes along the shoreline, including the Kauai Stilt-owl (Grallistrix auceps), a flightless rail, and three types of goose. A nearby cave called Makauwahi Cave is important for paleontology.