Vehicles (including buses and the school taxi for younger kids) used to turn round in one entrance to a (disused now but I do remember it working) limestone quarry near where I lived in N Wales, K. This may work to show the map I lived in Bryn Pydew and you had to turn round on to Pen Y Bont road for Glanwydden, at least going that way. There was another steeper route and with a couple of bends that I don’t think a bus (rather than mini bus) would make.

I think there was a fair amount of limestone in N Wales but our water was soft. Our supply would have come down from Llyn Duyln, a place I could feel a bit dark and creepy but probably mum;s favourite place anywhere.