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

11. OLDEST SIGNS OF HUMANITY AT A TOOL SITE

The channels in Southern California have some of the oldest human occupation sites, and in 2016, a significant discovery was made. On Santa Cruz Island, which is the largest of the Channel Islands, archaeologists excavated three tool-making sites. What’s striking is two of the sites are about 11,000 to 12,000 years old. Unusual tools unearthed at the site are traces of seafaring people. The most astonishing ancient find from the excavation is a crescent-shaped tool, but it’s still a mystery about their usage in ancient times.