lichen

They support more life than any other native tree species in the UK, hosting more than 2,300 species, including birds, mammals, insects, fungi, and lichens.

An "extinction crisis" is happening in Britain's temperate rainforests where some of the world's rarest mosses, lichens and liverworts are vanishing, ecologists have warned.

On the salvaged tiles alone, you can find salt efflorescence, water stains, fretting, lichen, smears of soot, scratches and gashes.

Also known as Celtic rainforest, the habitat harbours scarce plants, lichens and fungi, and is considered more threatened than tropical rainforest.

It is one of the region's largest oaks and a vital ecosystem for rare lichens like the black-eyed Susan.