Natural WondersDevil’s Marbles - Karlu Karlu Conservation Reserve: Science, History, and Cultural HeritageThe Devil’s Marbles (Karlu Karlu conservation reserve) is an area in Northern Territory, Australia, sprinkled with large reddish boulders.
Geological WondersWhat is the Richat Structure - "The Eye of the Sahara"?The Richat Structure (The Eye of the Sahara) is an eroded geologic dome in Mauritania, Africa. Its birth started over 100 million years ago.