Real photo postcard (RPPC) of Dunbar Stack, a dramatic sea stack on the Scottish coast. The photograph is taken from a cliff-top vantage looking along the face of sheer stratified sandstone cliffs dropping vertically to the sea; a tall isolated rock stack stands separate from the cliff face to the right, its layered geology matching the main cliff. The calm sea reflects the pale sky in the gap between cliff and stack.

• Caption: Dunbar Stack
• Publisher: Johnston, Wick & Thurso
• Status: Unposted