MacLean and Company Prismatic Cellar Light, Bothwell Street, Glasgow.

Cellar lights, also known as pavement lights or vault lights, are metal grids filled with glass prisms set into the pavement at the base of a building to allow light into basement levels.

While widely used in Glasgow in the late 1800s, like other type of historic street furniture, there seem to be relatively few remaining in their original condition.

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