Niijima is about 10 hours from Tokyo by the overnight ferry. The following description is from Wikipedia:

"Habushi Beach on the eastern side of the island, is a nationally protected reserve with its waves and white sand, and is a good location for surfing. The beach is approximately 6.5km long and is overlooked by koga volcanic cliffs, the highest of which is 250m.

Moyai Hill, overlooking Yunohama and Maehama beaches, contains more than 100 large stone carvings. In the local dialect, moyai means 'to work together in ... (more)