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 Full Moon Checkup Weather Blog A Full Moon Checkup May 26, 2026 An Early “Decoration Day” Celebration Weather Blog An Early “Decoration Day” Celebration May 25, 2026 Tornado Draws a Jagged Line in Mississippi Weather Blog Tornado Draws a Jagged Line in Mississippi May 22, 2026