Tuesday, 20 Apr 2021 05:35 PM MYT
Andrin Caviezel, researcher at the WSL Institute for Snow and Avalanche Research (SLF) checks a 3.200kg ferroconcret block before rockfall experiments in Schiers April 15, 2021. Reuters pic
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SCHIERS (Switzerland), April 20 As a scientist counts down “3-2-1”, five neon-coloured orbs are lowered from a helicopter hovering overhead and released. The orbs barrel down the Swiss mountain, toppling beech and spruce trees as they pick up speed.
These “test rocks” the heaviest weighing 3,200 kilogrammes are part of research aimed at understanding the growing risk of rockfalls around the world.
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