Dun an Sticir is an Iron Age broch situated approximately 9.5 kilometers north of Lochmaddy in a lake on North Uist. A building was erected on the site in the late-medieval period. Dun an Sticir was probably built in the Iron Age in the period between 100 BC and 100 AD, like most brochs. Limited excavations resulted in finds of pottery.
The broch was probably inhabited during the Viking period. In the Middle Ages the broch was converted into a rectangular hall, or small tower. The entrance was enlarged and a window was constructed. Outbuildings were added and there was a larger building on Eilean na Mi-Chomhairle. The causeway from the north side of the lake to Eilean na Mi-Chomhairle was widened to 3 meters, so that carts could get to the island.
The broch has a total diameter of 18 metres. The walls of the broch are 3.5 metres thick and in some places a little more than three metres high. The circular interior of the broch was in the Middle Ages transformed into a rectangular area 10 metres by 4.6 metres. The axis is northeast-southwest. The entrances are 1.1 metres wide, located in the northwest and southwest of the rectangular space. The wall at the southwestern entrance is 2.5 metres thick.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. 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. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.