The gigantic Yellowstone Grand Canyon, lined with volcanic rock. With all the effects of hydrothermal activity, river erosion ...

The steep cliffs and high rocks of a volcanic mountain made it difficult for enemies to attack and helped the defenders inside look out for attackers. Research castles to find out what other ...

Columnar cliffs form when lava from a volcanic eruption cools and contracts ... allowing for a close-up side view of the rock columns. Looking up at Tōjinbō from the water is also recommended.