[1] The mountain consists of marine sedimentary rocks from the Early Cretaceous period, 149–97 million years ago.
[2] The trailhead for the Mount Rebun hike is in Nairo.
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.
This Hokkaidō location article is a stub.