Comment on Shanay-Timpishka, a boiling hot river 700km from the nearest active volcanoparentComments−mrb1moOh! There seems to be a caldera around this boiling river: https://i.imgur.com/VCgS4Xt.jpeg
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Oh! There seems to be a caldera around this boiling river: https://i.imgur.com/VCgS4Xt.jpeg