Men-an-Tol is a prehistoric monument located in Cornwall, England. It consists of a circular stone, known as a "tol," flanked by two upright stones. The site is believed to date back to the Bronze Age and is part of a larger group of ancient structures in the region. The purpose of Men-an-Tol remains a mystery, but it is thought to have been used for rituals or as a burial site. The stones are approximately 4,000 years old, and the site attracts visitors interested in archaeology and ancient history.