Snow-covered trees, nicknamed "snow monsters," are silhouetted by the sun at the summit of Mount Zao on January 19, 2019, near Yamagata, Japan. #

Snow-covered trees are seen at Zao Onsen Ski Resort on January 20, 2018, in Yamagata, Japan. #

A snow-covered forest stands on Mount Zao. #

A gondola climbs past snow monsters on Mount Zao. #

A tourist walks in heavy wind and snow next to snow monsters on January 19, 2019. #

Snow-covered trees are seen at Zao Onsen Ski Resort on January 20, 2018. #

A snowy forest on Mount Zao. #

Snow monsters stand in the fog on the summit of Mount Zao. #

Colorful lights illuminate Mount Zao's trees at twilight. #

A tourist takes a selfie next to snow monsters at the summit of Mount Zao on January 19, 2019. #

A communication tower stands among snow-covered trees atop Mount Zao. #

Hikers climb past Mount Zao's snow monsters. #

A forest of snow monsters covers a slope on Mount Zao on January 19, 2019. #

A visitor photographs a group of snow monsters. #

Trees at the Zao Onsen Ski Resort are illuminated at night. #