30 Unusual Archaeological Finds In The US We Still Can’t Explain

13. STONE TOOLS AT CALICO SITE

The archaeological site, located outside of the town of Barstow in San Bernardino County is one of the most mysterious spots in America. The thousands of rocks resemble prehistoric tools embedded in the sediments of the shoreline of an ancient Pleistocene Era lake now known as Lake Manix. The exact date is still unclear, but it ranges from 20,000 to 30,000 BC which is a mystery because the age of the artifacts could reveal prehistoric tools, and the early settlement of humans is older than we thought.