Weather Blog Blast From the Past: A Modern Lake in an Ancient Crater Famously visible from space, ring-shaped Manicouagan Lake was filled at the dawn of the Space Age when Canada dammed a river to flood a Triassic-aged impact crater. Read More… About Author OTW Observer See author's posts Post navigation Previous ’I’m a doctor – there’s 2 reasons why heatwaves feel more uncomfortable in the UK’Next London weather expert warns of further incoming heatwaves new as map shows 31C return Related Stories A School of Mud Volcano Islands in Azerbaijan Weather Blog A School of Mud Volcano Islands in Azerbaijan April 21, 2026 Thailand’s Krabi Coast Weather Blog Thailand’s Krabi Coast April 20, 2026 Spring Rains Saturate Michigan Weather Blog Spring Rains Saturate Michigan April 17, 2026