The area is extremely varied geographically. The Tees estuary is highly industrialised and urbanised. Much of the remainder of the lowland parts of Cleveland is farmland. East Cleveland marks the northern end of the chain of cliffs that runs along the North Yorkshire Heritage Coast. South Cleveland is extremely hilly, forming the escarpment of the North York Moors. One of the best known symbols of Cleveland is the distinctive hill of Roseberry Topping, which overlooks Newton under Roseberry on the Great Ayton to Guisborough road. Its original roughly conical form was undercut by extensive mining, giving it a jagged appearance that many have thought reminiscent of the Matterhorn mountain.