Pumice rafts also hit Papua New Guinea's shores in 2020 after an underwater eruption. doctorlegacy / YouTubePeople in parts of Papua New Guinea are facing an unusual problem. Floating volcanic rock is making boat travel difficult, blocking access to fishing grounds and disrupting daily life in coastal communities. The source of the pumice is the ongoing Titan Ridge eruption from an underwater volcano in the Bismarck Sea. Since May 9, the eruptio…