Inishmore, the largest of Ireland's Aran Islands, is home to a remarkable natural wonder, a rectangular pool cut so straight into limestone that it looks man-made.
Split as if by a laser, the Al Naslaa rock in Saudi Arabia's Tayma Oasis baffles scientists and amateur geologists alike. How did this perfect split happen?
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The Tayma oasis in Saudi Arabia is famous for its rock art and its historic legacy. It was a major trade route in antiquity and was once the dwelling place of a Babylonian king, Nabonidus. It is referenced in both Assyrian and Biblical sources as a trading post and is also known for abundant rock art made as much as 4000 years ago.