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 Continue Reading 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 Cosmic Explosion Over Siberia Weather Blog A Cosmic Explosion Over Siberia June 30, 2025 A Dusty Vestige of the Old West Weather Blog A Dusty Vestige of the Old West June 29, 2025 Western Mountain Snow Melts Fast and Early Weather Blog Western Mountain Snow Melts Fast and Early June 28, 2025