Driving farther along the road, I came to several buildings and an imposing gate. This was the entrance to the Nakadake crater. If there is warning of an eruption, or if dangerous volcanic gas accumulates due to the direction of the wind, this gate closes. As soon as I passed through the gate, the scenery changed. The grassland that I had been admiring until then gave way to a hair-raising landscape of rocks and boulders. The dark brown color further intensified the atmosphere. This is what hell must be like, I thought. After I had driven for a few more minutes, the crater came into view. I stopped the car and headed toward the crater. There was a distinct smell of sulfur in the air, and I could hear a faint sound coming from the crater. Looking down at the crater over a fence, I could see right to the bottom. No water had collected there, but it was emitting smoke. The Nakadake crater has a diameter of 600 m, a circumference of 4 km, and a depth of about 130 m. It is one of the few places in the world where you can view an active crater. Apparently it gets more than one million visitors a year.