Description
It has one of the smallest overall diameters of any broch, as well as one of the thickest wall bases and smallest interiors; this massive construction (as well as its remote location) is likely to be the main explanation for its excellent state of preservation.
Located on the island of Mousa (at grid reference HU457237), it stands 44 feet (13 m) high and is accessible via a single entrance at ground level. Once inside, a visitor may ascend an internal staircase to an open walkway at the top. It is the only broch which is complete right to the top, including the original intramural stair. It is built of dry stone with no mortar, thus any disturbance could cause a great deal of damage. The characteristic hollow-walled construction is very clear at this site.
The broch went through at least two phases of occupation. In its original condition it doubtless contained a complex wooden roundhouse with at least one raised floor resting on a ledge or scarcement 7 ft (2.1m) above the ground. This floor was probably reached by the stone stair inside the wall. A second scarcement about 13 ft (3.09m) up could have supported a second floor or a roof. The entrance passage was low and lintelled with flat slabs and a water tank was cut in the underlying rock. There was also a large rectangular hearth resting on the rock.
Some time later a low stone bench was added round the base of the inside wall and this extended a short way into the entrance passage. The wooden roundhouse may have been demolished at this point; it was certainly demolished before the small wheelhouse (with three projecting stone piers) was built in the interior.
These Norse occupations are probably reflected in the fact that the original low lintels of the broch entrance have been torn out (their stumps can be seen), and the outer doorway doubled in height (it has now been restored to its original low level). This implies that the interior and the entrance were full of debris so the Norsemen had to raise the roof of the passage to get in.
In the National Museums of Scotland in Edinburgh is a large rim sherd from the broch of Mousa, probably found during the 19th century clearance. It is part of a large Everted Rim jar with a black burnshed outer surface and horizontal fluting along the inner surface of the rim.
In January 2005 it was announced that archaeologists used 3D laser scanning to catalogue the structure in detail for possible repairs. With the scans it is now possible to see how the structure was constructed in detail.
Coordinates: 59°59′44″N 1°10′57″W / 59.99562°N 1.18259°W / 59.99562; -1.18259
Read more about this topic: Broch Of Mousa
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