Weather Blog Rings of Rock in the Sahara In southeastern Libya, Jabal Arkanū’s concentric rock rings stand as relics of past geologic forces that churned beneath the desert. Read More… About Author OTW Observer See author's posts Post navigation Previous Big Fronts and Flooding…Next Met Office verdict on London being drenched in ‘heavy rain’ over miserable 11 day forecast Related Stories Tropical Storm Arthur Weather Blog Tropical Storm Arthur June 19, 2026 Desert Field Test With NASA Advanced Rover Prototype Weather Blog Desert Field Test With NASA Advanced Rover Prototype June 18, 2026 El Niño Is Underway Weather Blog El Niño Is Underway June 18, 2026