One of the best preserved broch sites in Shetland is the Broch of Clickimin Clickimin Loch, Großbritannien und Nordirland on the south shore of the Clickimin Loch in the vicinity of Lerwick. A broch is an Iron Age drystone hollow-walled structure of a type found only in Scotland. Clickimin Broch is a large, well preserved and restored broch originally built on an island in the loch, which was approached by a stone causeway. The broch is situated within a walled enclosure and, unusually for brochs, features a large "blockhouse" between the opening in the enclosure and the broch itself. There were several periods of occupation of the site: Late Bronze Age farmstead of the 7th or 6th centuries BC, Early Iron Age farmstead, Iron Age fort, broch period, and wheelhouse settlement. The external diameter is 20m and the internal one 9m. Finds include stone lamps, whetstones, bone and whalebone objects, a die, a few bronze objects, and two fragments of Roman glass.