Police said Monday that three people were injured after a cave they had dug on a snow-covered slope collapsed on their group in Iiyama, Nagano Prefecture, on Saturday night.
According to police, the group of seven men and women in their 40s to 50s met each other through the social network site mixi. They went camping in a snow-covered forest and dug a cave on a slope, six meters wide and 2 meters deep, where they planned to bivouack for the night, Fuji TV reported.
(Japan Today)
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