Mototate, Shiraishi Island, Kasaoka City, Okayama Prefecture
Rating
Cost per person
¥500
Yoroi Rock, a designated natural monument, is located on Shiraishi Island in Okayama Prefecture. This unique rock formation, resembling armor, is found near the summit of Mt. Onigajo. The rock's grid-like fissures are a result of a semi-granite porphyry (aplite) dike. Visitors can explore the island and hike to the rock, though the direct path involves a steep, potentially slippery climb. An alternate route to the summit is recommended for easier access. The surrounding area features other large boulders and scenic views.