The Global Volcanism Program lists it as an unnamed historically active volcano.

The group is described by the Smithsonian Institution's Global Volcanism Program as fumarolic.

For worldwide volcano information, please see the Smithsonian's Global Volcanism Program.

The Global Volcanism Program is housed in the department of Mineral Sciences.

According to the Global Volcanism Program, the caldera was formed 31 to 34 thousand years ago by one of Hokkaidō's largest quaternary eruptions.

This eruption has been assigned the volcano number 1702-02 by the Global Volcanism Program.

According to the Smithsonian Institution's Global Volcanism Program, the most recent known eruption was around 1300 years ago, with large error bars.

According to the Global Volcanism Program the last eruption took place between 0 and 100 AD.

It is used by the Smithsonian Institution's Global Volcanism Program in assessing the impact of historic and prehistoric lava flows.

However, according to the Smithsonian Institution's Global Volcanism Program, this eruption is considered uncertain.