Undated enclosure.


An elliptical enclosure is often visible as a cropmark on the summit of the Broogh, a low hillock on the NE side of Ronaldsway airport. The enclosure measures approximately 100m NNW-SSE and 80m WSW-ENE. Occasionally parts of another circuit are visible within the enclosure.


The summit has been disturbed by the installation of an air traffic light, dating either from the time of the construction of Ronaldsway airport as a military airfield in 1943-4, or else following its conversion to a civil airfield after the end of WW2.


More recently in 2011 a new radar installation was constructed within the enclosure and the work was the subject of an archaeological investigation. No finds were made.


It is possible, based on the finds made at Skibrick Hill (PRN 0109), that the enclosure might date to the Iron Age.