Trevaunance Coombe to Trevellas Porth

Immediately to the north of St Agnes are some fine engine houses overlooking Trevaunance Coombe, a valley whose steep sides carpeted with waste rock dumps make up a distinctive landform. At the head of the valley is the engine house of Gooninnis Mine (1899) with its castellated chimney, whilst to the west are those of Wheal Friendly (pre 1879) and Polberro Mine (by 1864) and to the east Wheal Kitty (1910).

Tin-dressing floors at Wheal Kitty demonstrate ore-processing technology from both the nineteenth and twentieth centuries.

Trevaunance Cove contains the remains of several harbours. They represent attempts to establish ports on the north Cornish coast, closer to South Wales. Each one was destroyed by the sea. The cliffs are riddled with ancient mine workings. Above them stand former harbour buildings and an ancient open-work on a tin lode at Wheal Luna.

Blue Hills Mine in Trevellas Coombe is marked by an engine house and chimney surrounded by shafts and waste rock tips in a steep-sided valley leading down to the sea at Trevellas Porth. Nearby is Blue Hills Tin Streams, a site which shows how tin streaming continued alongside hard rock mining. Visitors may see the waterwheel driven Cornish stamps together with tin-dressing.