Tategasaki, Rock formation in Kumano, Mie Prefecture, Japan

Tategasaki is a basalt rock mass about 80 metres high and 550 metres around, on the coast of Hobo, Kumano, at the north side of Nikijima Bay. Its rock face shows well-developed columnar jointing, and the name comes from its resemblance to a row of shields facing the Kumano Sea.

Tategasaki is linked by legend to the landing site of Emperor Jimmu, the mythical first emperor of Japan. The Edo-period gazetteer Kii Zoku Fudoki records the name and the tradition, and the monk Zōki wrote of the rock. On 20 August 1937 it was designated a Place of Scenic Beauty and Natural Monument of Mie Prefecture.

The rock formations hold spiritual meaning for the local community and appear in Shinto practices connected to the sea. These traditions remain visible in the small shrines and markers left by visitors who come to pay respects.

The best way to experience the rock formations is by boat, which provides close-up views of the columns and access to caves from the water. Walking trails along the cliffs also offer overlook points, though boat tours give the most dramatic perspective.

A natural sea cave at the site displays shifting colors as sunlight interacts with the water throughout the day, creating an ever-changing display. The cave deepens with the tide, revealing different textures and colors depending on when you visit.