Weather Blog Blast From the Past: Vredefort Crater The world’s oldest and largest known impact structure shows some of the most extreme deformation conditions known on Earth. Read More… About Author OTW Observer See author's posts Continue Reading Previous: Wimbledon close to its hottest day ever as temperatures soar past 34CNext: Tropical Storm Chantal could Develop… Related Stories Arctic Sea Ice Ties for 10th-Lowest on Record Weather Blog Arctic Sea Ice Ties for 10th-Lowest on Record September 19, 2025 Cooper Creek Replenishes Lake Eyre Weather Blog Cooper Creek Replenishes Lake Eyre September 17, 2025 Australia’s Howick River Weather Blog Australia’s Howick River September 17, 2025