- Ancient cave art featuring longboats, handprints, and abstract symbols—likely drawn centuries ago by seafarers.
- 19th-century explorers who misidentified the boat-like sketches as Norse ships and gave the site its nickname.
- Thai oral history, which speaks of sailors who mapped trade routes in bird nests and fish, leaving their marks as guides for others.
- Marine park status, linking this landmark to Thailand’s broader effort to protect both nature and tradition.