Aogashima Island Travel Blog / Tourism Guide

Ikenosawa Caldera


Aogashima Tourism Map

Ikenosawa seen from Nagashizaka hill

Aogashima is an island which consists of a compound volcano, and its characteristic terrain can be seen from Ikenosawa.

A road along the sea
Leaving the village and walking on a road on the east.
A diverging point on this side of Nagashizaka hill
A road for Ochiyo.
A sign saying speed limit
Speed is restricted to 30km an hour in the whole island.
A caldera of Ikenosawa
Overlooking Ikenosawa from the top of Nagashizaka hill.

If you go to Ikenosawa, go along the road on the east side from the village and go down to the inside of the caldera from the somma. The spot where you go down the somma is called "Nagashizaka hill". There are a tunnel (Heisei-nagashizaka tunnel) and an old road there. Pedestrians can take either way, but drivers should take the tunnel because the old road is dangerous.

Heisei-nagashizaka Tunnel
The diverging point between the tunnel and the old road.
The entrance of Heisei-nagashizaka Tunnel
This is a tunnel opened to traffic at 1992.
The whole view of Nagashizaka hill
Nagashizaka hill is the only route down to Ikenosawa from the somma.

Ikenosawa seen from the top of Nagashizaka hill is exactly a marvelous view. You can feel close to the natural formative art, like the somma with a bowl shape and pudding-shaped Mount Maruyama sticking out from the center of the somma.

Nagashizaka hill
The old road, Nagashizaka hill is a zigzag slope.
The somma seen from Nagashizaka hill
Going down Nagashizaka hill

I took a route of going down the old road, Nagashizaka hill this time. When I went into the somma, "bowl", I had a strange feeling that I have never experienced.

Ikenosawa seen from Nagashizaka hill
Going into the caldera little by little
A guardrail at a corner
The guardrail at the edge of a curve is gone... What the hell is this?
A slope to Ikenosawa
Going down the slope, You will arrive at the bottom of the caldera.

The road merges with the current road, running down to the bottom of the caldera.

Walking at Ikenosawa

A road in Ikenosawa
A road to Sampo port is paved only for the width of one car.
A loop line in Ikenosawa
Walking on opposite Sampo port.
A scrapped power shovel
An abandoned construction vehicle.

The inside of the caldera is a dense forest. In Ikenosawa, there are not any houses but fields, warehouses and factories because a lifeline is not maintained.

A service road running through the forest
A service road running through the inside of Ikenosawa.
The site of the demolished island government office
At the site of the demolished island government office, there stands a solitary swing.
A hut in Ikenosawa
A hut which stands in a vacant space.

It is said that the center of the village was in Ikenosawa in Edo period. This is because Ikenosawa was surrounded by the somma and was hardly influenced by strong winds, and geothermal steam was able to be utilized for life, and Ikenosawa had water source, so it had no trouble with water. There were such advantages for living in Ikenosawa. Today, the traces that Ikenosawa is the center of the village are only the site of the demolished island government office (somehow, there stands a solitary swing) and stone walls left at some places.

A view from Maruyama View Park
Overlooking the somma from the top of Mount Maruyama.

You can also climb Mount Maruyama that rises in the middle. When you start walking from the starting point near the campground, you will get there in about 20 minutes.

Next : Sampo Port, Kanju-maru

Visit Day
2011/08/07 - 10
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