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 Spring Rains Saturate Michigan Weather Blog Spring Rains Saturate Michigan April 17, 2026 Eyeing the Richat Structure Weather Blog Eyeing the Richat Structure April 16, 2026 NASA’s SPHEREx Mission Maps Water Ice Throughout Cygnus X Weather Blog NASA’s SPHEREx Mission Maps Water Ice Throughout Cygnus X April 15, 2026