This is the largest and best-preserved group of Neolithic flint mines in Britain; they produced the cutting edges of spears, arrows, and knives for prehistoric tribes throughout the region. Because of its isolated location within sparsely populated, fir-wooded countryside, it's easy to imagine yourself transported back through the millennia.

A guardian will meet you near the well-signposted parking lot. After determining that you are not physically impaired, he or she will open one or several of the mineshafts, each of which requires a descent down an almost-vertical 9m (30-ft.) ladder (a visit here is not recommended for very young children, elderly travelers, or those with disabilities). Because the tunnel and shaft have been restored and reinforced, it's now possible to see where work took place during Neolithic times. Although it's not essential, many archaeologists, professional and amateur, bring their own flashlights with them. The mines, incidentally, are situated close to the military bases that housed thousands of American Air Force personnel during World War II.