Uploaded June 2026 | Updated September 2026, 3 days ago
The Eye of the Sahara isn't the only weird geologic "ring" on Earth. A similar feature exists in southern Illinois, though you never hear about it and it's hard to see without a detailed topographic map. It's also full of rare Earth elements, so it may become more a feature of conversation in coming years. This video talks about the weird "Eye of southern Illinois," discussing it's formation, erosional evolution, and discovery through a drilling project in the 1950s.
The Eye of the Sahara isn't the only weird geologic "ring" on Earth. A similar feature exists in southern Illinois, though you never hear about it and it's hard to see without a detailed topographic map. It's also full of rare Earth elements, so it may become more a feature of conversation in coming years. This video talks about the weird "Eye of southern Illinois," discussing it's formation, erosional evolution, and discovery through a drilling project in the 1950s.
