Nokogiri Yama

Mount Nokogiri literally "saw mountain" is a low mountain on the Bōsō Peninsula on Honshu, Japan. It lies on the southern border of the city of Futtsu and the town Kyonan in Awa District in Chiba Prefecture.

The mountain runs east to west, having the characteristic sawtoothed profile of a Japanese saw.

It falls steeply into Tokyo Bay on its western side, where it is pierced by two road tunnels and a rail tunnel, carrying the Uchibo Line south from Futtsu to Tateyama. Both features are due in part to the mountain's history as a stone quarry in the Edo period, the marks of which are still picturesquely evident.