The holes in impact sockets are for a retaining pin that keeps the socket firmly attached to the wrench, ensuring safety and stability under pressure.
New research suggests that the holes were the site of an ancient marketplace, and Inca rulers may have used them as a ...
Thousands of holes arranged in a snake-like pattern on Monte Sierpe in Peru could have been a monumental accounting device ...
In southern Peru, a 1.5-kilometre stretch of land dotted with thousands of carefully aligned holes has puzzled researchers ...
In Peru’s mysterious Pisco Valley, thousands of perfectly aligned holes known as Monte Sierpe have long puzzled scientists.
MacArthur Fellow Kareem El-Badry is redefining how we understand the cosmos, uncovering black holes, decoding the ...
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The deepest holes on Earth

The depths of Earth have puzzled the scientific community for millennia. For many years, we only had access to natural holes, even though many haven't been explored until fairly recently. But things ...