Nakajima

What it is

• The largest lake island in Japan, located within Lake Kussharo.
• A post-caldera volcano formed less than 23,000 years ago.
• A site previously known as Tomoshiri by the Ainu people.
• A protected area where landing on the island is strictly prohibited.

What to see

• A volcanic structure consisting of a tuff ring and two lava domes.
• A peak rising 175 meters above the surface of the lake.
• An island diameter spanning 2.5 kilometers across the water.
• The highest peak which was formerly known as Reputannupuri.

Notes written by Japan Gems from facts in Japanese Wikipedia.