Jigokudani Snow Monkey. My wife, Barbara, suggested we go see the monkeys. After the bus dropped me off at the base of the mountain outside of Nagano, I had to hike up the steep trail with my backpack, past a waterfall, and to the ryokan where I would be staying the night. There was a geyser outside my window that gushed water about 200 feet into the sky all night long without ever stopping. The snow monkeys liked to warm themselves in the geyser water pool.