01 / The Tsuge Primeval Forest of Mount Kosho (古処山)
Near the summit, a primeval forest of tsuge spreads over about 12 ha.Some old trees are more than 1,000 years old.

It grows near the summit of Mount Kosho (860 m), which straddles Kama and Asakura. Asama-tsuge, Ohime-tsuge and Maruba-tsuge are found, over an area of about 12 ha. As an example of a primeval forest that remains in good condition, it is a national Special Natural Monument.
- Special Natural Monument (specially designated March 29, 1952)
- About 12 ha (city)
- Some old trees are more than 1,000 years old (city)
