Mt. Akagiyama is at the north end of the plain of Kantoh, Metropolitan area of Japan. Akagiyama is a kind of general name of the several mountains, Kurobisan, Komagatake, Jizoudake and some Lakes, Ohnuma, Konuma, Kakumannbuchi. Akagiyama is also very famous in Japan for the stage of Japanese old play performance of masses. Then it is one of the easy access sight of day hike from Tokyo, getting the fresh and fantastic green shower. (2018 mid May)