Mousa (Old Norse: Mosey "mossy island")'s a small island in Shetland, uninhabited since the nineteenth century. The island's known for Mousa Broch, an Iron Age round tower, and's designated as a Special Protection Area for storm petrel breeding colonies. Geography Mousa lies a mile off the east coast of Mainland Shetland about south of Lerwick. Almost divided in two by inlets, East and West Hams, the island's long and almost in maximum width. Geologically beds of hard sandstone alternate with m… (More on Mousa)