Weather Blog A Morphing Monument of Sand France’s La Grande Dune du Pilat, the tallest sand dune in Europe, was 4,000 years in the making. Read More… About Author OTW Observer See author's posts Continue Reading Previous: Gleaming Waters in the Sahel Next: Met Police warn over swimming dangers as temperatures expected to hit 22C Related Stories Mutnovsky Volcano Weather Blog Mutnovsky Volcano July 27, 2025 Buccaneer Archipelago Weather Blog Buccaneer Archipelago July 26, 2025 More Lava Fills Kilauea Crater Weather Blog More Lava Fills Kilauea Crater July 24, 2025