The Kuwajima Fossil Bluff is a fossil area from the Early Cretaceous Period of the Mesozoic Era (146 to 66 million years ago) and a nationally designated natural monument. This place is often called the birthplace of geology in Japan, because it was the subject of the first paleontology paper published in Japan. It is an important place to study diverse paleoenvironments in the Mesozoic Era because a large variety of fossil plants, reptiles and mammals as well as dinosaurs have been found there.

Although access to the wall is restricted for safety, a lookout spot is available beside the wall.