Weather Blog Mountains Made of Fossils The peaks in Guadalupe Mountains National Park—some of the highest in Texas—are made of a well-preserved fossil reef formed more than 250 million years ago. Read More… About Author OTW Observer See author's posts Continue Reading Previous: New London weather map shows exact dates ‘mini heatwave’ to hit with 22C temperaturesNext: London Marathon weather forecast and when ‘mini-heatwave’ on the way Related Stories Buccaneer Archipelago Weather Blog Buccaneer Archipelago July 26, 2025 More Lava Fills Kilauea Crater Weather Blog More Lava Fills Kilauea Crater July 24, 2025 A BIG Moment for Apollo 11 Weather Blog A BIG Moment for Apollo 11 July 24, 2025