Ambrym: Mighty Marum & Big Benbow One volcano, two lava lakes. Ambrym, Vanuatu

A few months ago, on a Maya pyramid in the middle of the Guatemalan jungle, we met Sam Cossman, a young guy from the States who had done a crazy thing: Dressed in a special suit he descended into the crater of one of the world’s most active volcanoes, Mt Marum on the island of…