Den Weg Islands (Teluk Berau),
The Den Weg Islands are known for their ancient rock art, drawn on canyons, which are visible only by boat. The drawings were made using naturally red materials, resembling human blood. The locals call them ‘blood paintings’, and consider the very sacred. Some of the paintings depict human skeletons, which reference the ancient custom of placing the bodies of their ancestors in the rock cliffs and caves.