It is a trekking tour with an exclusive guide to the summit of the small Asama mountain of the Asama mountain foot. Koasayama is a parasitic volcano on the eastern foot of Mt. Asama at an altitude of 1,655 m. A guide will guide you through the formation and vegetation of Mt. Asama and aim at the summit. As it is about two and a half hours by round trip, if you are new to mountain climbing, you can feel free to participate regardless of age or sex. From the top of the mountain covered by the volcano, the spectacular Mt. Asama and the wonderful prospects await.