There is evidence of a Bronze Age burial site on Shire Hill (near Old Glossop) and other possibly prehistoric remains at Torside (on the slopes of Bleaklow). The Romans arrived in 78 AD. At that time, the area was within the territory of the Brigantes tribe, whose main base was in Yorkshire. In the late 1st century the Romans built a fort, Ardotalia, on high ground above the river in present-day Gamesley. The site of this fort was rediscovered in 1771 by an amateur historian, John Watson. It subsequently acquired the name Melandra Castle. The extensive site has been excavated, revealing fort walls, a shrine and the fort headquarters. The area has been landscaped to provide parking and picnic areas.