Topographical and geophysical survey at Knocknashee, Co. Sligo: Results from the 2016 campaign

In the summer of 2016 a series of surveys were carried out of the summit of Knocknashee Hill, Co. Sligo. A topographical survey of the entire summit plateau was conducted, as was a magnetic susceptibility survey. Magnetic gradiometry and earth resistance surveys were carried out over a much smaller area, focused on a particularly well preserved group of roundhouses. The topographical survey revealed additional houses not previously recorded. It also allowed hitherto unnoticed settlement patterning to be observed. The magnetic susceptibility survey produced a map of probable areas of intense activity on the summit of the hill, and the magnetic gradiometry survey demonstrated the presence of additional structures, not visible as surface features, whose close, perhaps overlapping nature suggests that there may be a superimposition of structures not previously identified at Knocknashee.