Amongst the many natural features is High Force in Teesdale, a huge waterfall. A woodland walk leads visitors to this spectacular feature which is a mass of whirling waters.
Lying on the River Tees, which starts as a trickle high on the fells of the North Pennines, the water gradually gathers pace, suddenly dramatically dropping 21 metres into the plunge pool at High Force.
A huge force of rushing water spills over the falls, forming whirlpools and dramatic views for bystanders. The name "force" comes from the Viking word meaning a waterfall.
Killhope Lead Mine is situated in one of the most remote parts of the North Pennines. The surrounding area is incredibly rich in minerals including lead, quartzite and flourspar.
Industry was attracted by the wealth of minerals and by the area's water power, used to power its old-fashioned wheels.
Thirty thousand workers were employed in the area's many mines 150 years ago. By 1900, the population had moved away as the industry died out.