Bluestone

Carn Menyn bluestones. These dolerite slabs, split by frost action, seem to be stacked ready for the taking, and many have been removed over the centuries for local use. Research favours the theory that humans also transported stones from Carn Menyn to build Stonehenge, about 250 km away.

Bluestone is a cultural or commercial name for a number of natural dimension or building stone varieties, including:

It is unrelated to human-made blue brick.