The Ness of Burgi fort is an iron-age promontory fort. It is about 1.6 km south from the village of Scatness, and may be reached by foot along a grass path that leads to the headland of the Ness of Burgi. The fort is on a rocky promontory on the east side of the Ness and is open to the public at all times.
The blockhouse seems to be excessively large for the area that it protects, and so was perhaps more designed to impress rather than to defend. The blockhouse structure seems to have been built as an integral part of the defensive wall. The walls do not reach the edges of the cliffs on either side. There is no evidence that they once reached further and since have been shortened through natural or human activity. The ends are properly finished. It seems that the gaps were deliberate, and defense was not a primary concern. In fact, there are other points on the promontory that provide equally good natural defensive positions.
There may be some similarity in this incomplete defensive wall with the forework of the Broch of Clickimin, the Huxter Fort and the Crosskirk Broch. These works may be seen as prototypes that evolved into the brochs that were later built in the islands and the Scottish and Irish mainlands.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.