is the highest point on Rebun Island

Rebun Island

Rebun Island lies in the Sea of Japan off the northwestern tip of Hokkaidō, Japan. Rebun stretches 29 kilometers in the north-south direction and 8 kilometers east-west, covering about 80 square kilometers. The island is known for its alpine flowers and the 8-Hour Hiking Course which runs from one...

 in Rebun

Rebun, Hokkaido

is a town located in Rebun District, Sōya, Hokkaidō, Japan. The district and town both cover the island of the same name: Rebun Island. Rebun island is famous for its alpine flowers.-Geography:...

, Hokkaidō

Hokkaido

, formerly known as Ezo, Yezo, Yeso, or Yesso, is Japan's second largest island; it is also the largest and northernmost of Japan's 47 prefectural-level subdivisions. The Tsugaru Strait separates Hokkaido from Honshu, although the two islands are connected by the underwater railway Seikan Tunnel...

, Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. The mountain consists of marine sedimentary rocks from the Early Cretaceous

Early Cretaceous

The Early Cretaceous or the Lower Cretaceous , is the earlier or lower of the two major divisions of the Cretaceous...

period, 149–97 million years ago.

Climbing route

The trailhead for the Mount Rebun hike is in Nairo. It is a 3-hour hike with no water available. The trail first passes through fields of sasa-no-ha before entering a forest of pine and birch. The peak rises above the forest to grant an unobstructed view of the entire island.