The mine at Carn Galver operated on and off from the 1830s to 1878, transforming this quiet coastal moor into a bustling industrial zone. Visitors in the 1870s would have seen smoke billowing from the stack of the steam pumping house (the taller ruined building) which drained water from the mines’s deepest shafts, whilst the clanking winch of the adjacent engine house raised ore to the surface in huge buckets. Carts would then haul off the ore to the nearby Bosigran Stamps (which replaced the early 19th century stamps at Porthmoina Cove) for crushing, separating and roasting. The Count House where the mine manager lived, kept the accounts and entertained shareholders to lavish dinners, is now the Climbers Club.
source: NT information plaque
These buildings are nothing but ruins now and I am amazed that anything is still standing at all after all this time given their location right on the edge of the Celtic Sea (Atlantic) with nothing between them and the weather which blows in from the west.
Or climb up to Carn Galver opposite which may once have been a fortified refuge in Neolithic times to get a good view of this prehistoric landscape.
Today though it was too late for exploring as the sun was already setting and it was time to head home.