Altamura man fossil

Altamura man is an extremely well preserved fossil of a man who fell down a well/sinkhole over 100,000 years ago. Researchers are still trying to figure out  how to safely extract the remains from the calcite. – WTF Fun Facts

Source: https://www.ancient-origins.net/news-evolution-human-origins/calcified-altamura-man-oldest-neanderthal-dna-sample-020285