The 400-meter Kuroiwa-kyo Gorge is a small and quiet gorge along the Kuroiwa River within the Iwaki-san Prefectural Natural Park. You can enjoy taking a stroll while appreciating the natural beauty year-round of fresh green leaves in the spring, cool stream water that offers relief from the heat of the summer, and the autumn leaves in the fall. The area is also known for the nearby Mitsuo Hot Spring and Yobizuru Hot Spring.