So-called ‘witch’s hair’ – thin, sharp, glass needles that are created in volcanic eruptions – have started falling on communities across the Reykjanes peninsula as a volcano in southwest Iceland continues to erupt. It’s caused particular problems in the town of Reykjanesbær where it’s clogged filters at a local swimming pool and caused minor injuries after customers stepped on it barefoot. “We’ve never seen anything like this before, it definitely didn’t happen in the previous eruptions,” said Director of Sports Facilities, Hafsteinn Ingibergsson. Minney Sigurðardóttir, a natural hazard exper…