In the north of Ngursarnadan beach, another exotic beach is worth a visit. The beach is called Ohi Dertawun beach, which offers view of 5 to 10 meters cliff guarding the beach. At the most endpoint of this cliff, hundreds of small paintings can be seen. It is believed that the paintings are dated back to prehistoric age.
These paintings depict human figures, trees, boats, crocodile, fish and handprints. The patterns are similar to those found at Tewet Cave, East Kalimantan. Such artefact can also be found in Wamkana (Buru Island), Sawai (Central Maluku), Speelman Bay (Papua) and Kotobu (Southeast Sulawesi).