The andesite boulder was formed by lava cooling and contracting during the Neogene period.
The rock's height of approximately 20 meters makes it the largest of its kind in the Tango Peninsula.
Its name, Tateiwa, translates literally to 'Standing Rock.'
The formation is part of the extensive volcanic belt that characterizes the northern coast of Kyoto Prefecture.
It serves as a geological indicator of the crustal movements that shaped the Sea of Japan's southern coastline.
Tateiwa is a massive 20-meter tall monolith composed of columnar-jointed andesite located directly on the coastline of the Sea of Japan. The rock formation is a prominent example of volcanic geology, featuring distinct vertical strata that illustrate ancient volcanic activity. It is officially designated as a natural monument by the local municipal government. The surrounding coastline is part of the San'in Kaigan Geopark, which highlights the geological connection between the land and the sea. The rock sits within the Taiza area, historically associated with the legend of Prince Shotoku’s mother, Empress Anaho, who reportedly sought refuge here. The site provides unobstructed views of the horizon and is a focal point for understanding the regional maritime geography.
From the beach level looking upward to capture the contrast between the vertical volcanic strata and the sea horizon.
Visit during low tide to explore the rock's base safely and see the textural details of the volcanic strata.
Check local weather reports, as the Sea of Japan coastline can experience strong winds and high waves.
Bring sturdy footwear, as the surrounding shoreline is composed of uneven rocks and gravel.
Attempting to walk near the base during high tide or storm conditions when waves can reach the cliff face.
Avoid climbing the rock formation to prevent erosion and personal injury.
