Akaigawa Caldera

{{Expand Japanese|topic=geo}}

{{Short description|Caldera located on the island of Hokkaido, Japan}}

{{Infobox mountain

|name=Akaigawa Caldera

|native_name={{native name|ja|赤井川カルデラ}}

|elevation_m= 725

|elevation_ref={{cite web|url=https://gbank.gsj.jp/volcano/Quat_Vol/volcano_data/C07.html|title=Akaigawa Caldera|publisher=Geological Survey of Japan|access-date=2023-04-19}}

|listing= Volcanoes in Japan

|country=Japan

|subdivision1_type = Prefecture

|subdivision1=Hokkaido

|map = Japan#Japan Hokkaido

|map_caption = Location in Japan##Location in Hokkaido

|coordinates = {{coord|43.0833|140.8167|type:mountain_region:JP|format=dms|display=it}}

|coordinates_ref=

|type=Stratovolcano

|geology={{enum|Andesite|Dacite|Rhyolite}}

|last_eruption=Pleistocene

}}

Akaigawa Caldera (赤井川カルデラ, Akaigawa karudera) is a caldera located in Hokkaido Prefecture, Japan. It was active anywhere between 1.7 and 1.3 million years ago.{{cite gvp|name=Akaigawa|vn=285810|access-date=2021-06-25}}

File:Akaigawa Caldera & Yoichigawa Caldera Relief Map, SRTM-1.jpg]]