Càrn Liath is an Iron Age broch on the eastern shore of the Scottish Highlands. The broch has an external diameter of around 19 metres and an internal diameter of around 10 metres. The entrance passage is on the east side and is over 4 metres long. The entrance has elaborate door checks and a bar-hole to control access to the interior. On the right-hand side of the entrance passage is a small guard cell. The surrounding enclosure contains the ruins of additional stone buildings.
The broch was first excavated in the 19th century by the Duke of Sutherland, and was initially thought to be a burial cairn. Finds included pottery, flint chips, stone hammers, mortars and pestles, querns, whorls, shale rings, long-handled bone combs, a whale bone club, a silver fibula, steatite cups and an iron blade.
The site was excavated again in 1986. This showed that the site was occupied in the Bronze Age, before the broch was built. A Bronze Age cist burial with a food vessel was discovered. The foundations of many outbuildings were found in the enclosure surrounding the broch. Although many were clearly from a later period, some may have been contemporary with the broch.References:
Roman Walls of Lugo are an exceptional architectural, archaeological and constructive legacy of Roman engineering, dating from the 3rd and 4th centuries AD. The Walls are built of internal and external stone facings of slate with some granite, with a core filling of a conglomerate of slate slabs and worked stone pieces from Roman buildings, interlocked with lime mortar.
Their total length of 2117 m in the shape of an oblong rectangle occupies an area of 1.68 ha. Their height varies between 8 and 10 m, with a width of 4.2 m, reaching 7 m in some specific points. The walls still contain 85 external towers, 10 gates (five of which are original and five that were opened in modern times), four staircases and two ramps providing access to the walkway along the top of the walls, one of which is internal and the other external. Each tower contained access stairs leading from the intervallum to the wall walk of town wall, of which a total of 21 have been discovered to date.
The defences of Lugo are the most complete and best preserved example of Roman military architecture in the Western Roman Empire.
Despite the renovation work carried out, the walls conserve their original layout and the construction features associated with their defensive purpose, with walls, battlements, towers, fortifications, both modern and original gates and stairways, and a moat.
Since they were built, the walls have defined the layout and growth of the city, which was declared a Historical-Artistic Ensemble in 1973, forming a part of it and becoming an emblematic structure that can be freely accessed to walk along. The local inhabitants and visitors alike have used them as an area for enjoyment and as a part of urban life for centuries.
The fortifications were added to UNESCO"s World Heritage List in late 2000 and are a popular tourist attraction.