In Photos: Wildfire burns across more than 10 hectares of east Japan mountain

This photo taken from a Mainichi Shimbun helicopter shows the fourth day of wildfires in a mountain forest in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. A Self-Defense Force helicopter resumed firefighting efforts on the same morning. (Mainichi/Daiki Takikawa)

This photo taken from a Mainichi Shimbun helicopter shows flames from the fourth day of wildfires in a mountain forest in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Daiki Takikawa)

This photo taken from a Mainichi Shimbun helicopter shows a Self-Defense Force helicopter fighting the fourth day of wildfires that have burned in a mountain forest in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Daiki Takikawa)

This photo taken from a Mainichi Shimbun helicopter shows the effects of four days of wildfires that have been burning in a mountain forest in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Daiki Takikawa)

This photo taken from a Mainichi Shimbun helicopter shows the effects of four days of wildfires that have been burning in a mountain forest in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Daiki Takikawa)

This photo taken from a Mainichi Shimbun helicopter shows the effects of four days of wildfires that have been burning in a mountain forest in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Daiki Takikawa)

Plumes of smoke rise from a wildfire in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Yuzuru Ota)

Smoke rises from Mount Ryogai in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Kodai Tamai)

Wildfire continues to burn in forests on Mount Ryogai in Ashikaga, Tochigi Prefecture, on Feb. 24, 2021. (Mainichi/Kodai Tamai)