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 Where Venezuela’s Earthquakes Shifted the Ground Weather Blog Where Venezuela’s Earthquakes Shifted the Ground July 10, 2026 Super Typhoon Bavi Weather Blog Super Typhoon Bavi July 9, 2026 Cottonwood Fire Chars Utah Weather Blog Cottonwood Fire Chars Utah July 8, 2026