Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone.

The trail has sections of gravel, slate stones, grass, and rock.

The castle is built from purple and green slate stone, mainly constructed in a dry stone fashion without mortar, with the exception of the keep.

All grades use the same uniform black slate stones.

The church is built of local grey slate stone and is Gothic in style.

He was said to have used a "large polished slate stone for composing."

It is a two-storeyed building constructed from local slate stone and has a great hall with a hammer-beam roof which was installed in the late 15th century.

An area outside the lobby's sliding doors is to feature a wall of water cascading down striated slate stones with several bamboo trees.

St Mary's is constructed in slate stone with sandstone dressings and slate roofs.

It was built of local slate stone and was roofed with Pembrokeshire slates.