Mount Maru (Esan)

Mount Maru (丸山) is an active stratovolcano of the Kameda peninsula. It is located in Hakodate, Hokkaidō, Japan. Mount Maru is also known as Esan Maruyama (恵山丸山) to distinguish it from other Mount Maru's and because of its close association with nearby Mount E.

Geology
Mount Maru consists of non-alkali, mafic, volcanic rock. The andesitic volcano is topped with a lava dome.

Eruptive history
Mount Maru was last active some 200,000 years ago.