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Akan Caldera
100 famous Japanese Mountains
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Japan map Akan Caldera

The 24 x 13 km wide Akan caldera was formed about 31'500 years ago and forms together with the Kussharo and Mashu Caldera the Akan Nationalpark.

The caldera is composed of several volcanoes including the volcanoes O-Akan (1'371 m), Me-Akan (1'499 m) and Akan Fuji (1'476 m). Inside the caldera there you find Lake Akan, Lake Penketo and Lake Panketo with forests surrounding them. The Me-Akan is one of the 100 famous mountains in Japan.

 

mountainstamp.com Akan caldera lake Oakan Volcano Mountain stamp 1950

Japan 1950
The stamp was issued in sheets of 20 stamps and in the miniaturesheet "Akan Nationalpark".

The stamp is showing a view from the top of Me-Akan across the Akan Caldera towards the O-Akan Volcano (1'371 m).

The O-Akan Volcano with a diameter of 8 kilometres rises about 900 metres above the surrounding terrain. There are three explosion craters at the summit.

 

Japan 1956, Lake Ball.

Lake ball (Aegagropila linnaei), also known as Marimo, is a rare species of filamentous green algae found in a few lakes in the northern hemisphere. Colonies of such balls are known only in three lakes, Lake Akan in Japan, Lake Myvatn in Iceland and to a much lesser extent in Lake Öisu in Estonia.  

 

mountainstamp.com Akan Fuji Volcano Mountain stamp 1950

Japan 1950
The stamp was issued in sheets of 20 stamps and in the miniaturesheet "Akan Nationalpark".

The stamp is showing a view from the top of Me-Akan towards the Akan Fuji (1'476 m). In the foreground you can see the Aonuma pond of the Me-Akan Volcano. 

 

mountainstamp.com Akan caldera lake Oakan Volcano Mountain stamp 1969

Japan 1969, Lake Akan and O-Akan Volcano. 

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