Columnar Joints and Landscapes
Jogasaki Coast (continued)
Location: Ito City, Shizuoka Prefecture (On
the Google map)
Izukyu Izukogen Station. Walk for 15 minutes. To get to the outcrop of columnar joints, go down a stairway to the beach at Hashidate (there is a sign “Oyodo, Koyodo” [names written in Japanese below]).
You can observe landforms and structure of lava flow from Hashidate through Izu Kaiyo Park (about 5 km). At Izu Kaiyo Park, buses for Izukogen Station, Jyogasaki Kaigan Station, and Ito Station are available. Moreover, there is a trail to a suspension bridge crossing a crevasse formed by collapse of the roof of lava tube at Kadowaki. A map of the Jogasaki Coast is placed in this website (right-click on the image to download it or click on "画像をPDFで開く" )
The area of the northeastern Izu Peninsula has many monogenetic
volcanoes (Izu-tobu Volcano Group). Volcanic landforms including scoria
cones, lava domes, maars, and lava plateaus constitute the landscape of
this area. Omuroyama 581 m high commands a full view of these
landforms. A chair lift is available to the summit. The Izu-tobu
Volcano Group is explained in a website,
Masato Koyama’s Home Page - Shizuoka University (Eruptive history
of the Higashi Izu monogenetic volcano field [Izu Tobu volcano field]).
How to get to Omuroyama: Izukyu Ito Station or Izukogen Station. Take a bus for Shaboten-koen and get off the terminal stop (Shaboten-koen).
Photo 17: View from the top of Omuroyama
1: Lake Ippeki (maar); 2: Komuroyama (scoria cone); 3: Tuff ring
The forward plane is a lava plateau. A knoll (Teishi Knoll) to the north (left side) of an island in the background was formed by the 1989 submarine eruption.
[Names written in Japanese]
Jogasaki Kaigan (coast), 城ヶ崎海岸
Hashidate, 橋立 (はしだて)
Izukogen-eki (station), 伊豆高原駅
Izu Kaiyou Koen (park); 伊豆海洋公園
Ito-shi (city); 伊東市