A Quebec amateur astronomer was scouting a campsite using satellite imagery in 2024 when he spotted a 25-kilometre ring around Lake Marsal, and geologists who reached it by floatplane the following year found shatter cones confirming a roughly 390-milli
What it is about
Who published it, and when
How it spread - 3 original reports
Fri, 18 September 2026
2 reports- Polsat News (Poland)04:07first to report
Kanadyjski amator astronomii szukał na mapach Google miejsca na biwak, a natrafił na ślad kosmicznej katastrofy sprzed 390 mln lat. Zarys ogromnego krateru w odludnym zakątku Quebecu widać na zdjęciu satelitarnym NASA.
- RMF24 (Poland)09:48
Przypadkowe odkrycie w Kanadzie. Szukał miejsca na biwak, a znalazł krater wielkości Warszawy
Mon, 21 September 2026
1 report- Google News - Top Stories10:00
A Quebec amateur astronomer was scouting a campsite using satellite imagery in 2024 when he spotted a 25-kilometre ring around Lake Marsal, and geologists who reached it by floatplane the following year found shatter cones confirming a roughly 390-milli Space Daily A strange circle on satellite maps turned out to be a 390-million-year-old impact crater ScienceDaily Huge impact crater in Quebec went unnoticed for 390 million years Earth.com