The Ito Area is located at the eastern shoreline of the peninsula. This area is also one of the geologically newest landforms of the peninsula. Characteristic geosites like Omuroyama and Jogasaki Coast were created by the eruptions of Mt. Omuroyama about 4000 years ago. This was during the hitorical period of Jomon Era (when most of the population lived as hunter gatherers).
Omuroyama is a 581 m high cinder cone–one of the two largest cinder cones of Japan (incidentally, the other large cinder cone is also called Omuroyama, but it is located near Mt. Fuji). This mountain is a part of the Izu Tobu Monogenetic Volcanic Chain. Monogenetic volcanoes do not erupt twice from the same vent– the Izu Tobu Monogenetic chain is still active, which makes it a rare active monogenetic group in Japan. Omuroyama is also known for its eye-ctaching shape, the mountain has almost perfect 30 degree slopes and a crater at the top. This appearence is carefully maintained through periodic burning of the vegetation. It is one of the most recognizable tourist spots in the Izu Peninsula.
The Jogasaki Coast was created by the lava that flowed from Omuroyama 4000 years ago and plunged into the Sagami Bay. Large columnar joints of the andesitic lava, ‘potholes’ created by wave erosion of lava rocks and broken lava crusts are some of the main attractions. A part of the coast is also known for its vegetation cover, large black pines, broadleaf trees and junipers make it a pleasant hiking course.
The city of Ito is also known for its hot springs. It is a major tourist hub in Izu Peninsula.