Ontake reopens; stay alert

Restrictions on hiking to the summit of Mt. Ontake, a volcano in central Japan, will be lifted from tomorrow, Saturday 29 July, reports the Mainichi Shimbun. The summit area has been closed to hikers since the deadly eruption in 2014, in which more than sixty people lost their lives.

Fumaroles on Ontake, summit region, c.1992

From 10 am Saturday, entry will be allowed to a ridge that connects the 2,936-metre Otaki peak to the highest 3,067-metre Kengamine peak, an area particularly affected by the volcanic disaster, the newspaper says, adding that access to some hiking paths near the summit will remain restricted.

The 2014 disaster – a so-called phreatic eruption – was all the more devastating because of a complete lack of warning signs. In its wake, Japan’s Home Ministry and its Meteorological Agency issued a leaflet for hikers to raise awareness of volcanic hazards. Now that Ontake is open again, it might be time to take another look at those guidelines.

References

Mainichi Shimbun, "Entry bans around Mt. Ontake summit to be lifted after 2014 eruption", 26 July edition.

“Hazard alert: Japan’s authorities issue volcano safety guidelines for hikers”, One Hundred Mountains (this blog), May 2017.