Aso Volcano has the largest lava rock in the world. Enjoy the idyllic scenery and atmosphere, and the majestic landscape of Kusasenri created by Mt. Eboshi, one of the Five Peaks of Aso, and the pond formed by rainwater; check out the hot spring town of Kurokawa Onsen, which has a fantastic view and many delicious foods. Kumamoto Kusasenri Package: Kumamoto Castle (about 110 minutes) - Kusasenri including Aso Crater (about 120 minutes) - Get off at Aso Station - Aso Road Station (about 15 minutes) Kurokawa Kusasenri Package: Kusasenri including Aso Crater (about 90 minutes) - Aso Shrine (40 minutes) - Kurokawa Onsen (about 90 minutes)