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Redland geophysical survey
Date July 2009
Event ID 608607
Category Project
Type Project
Permalink http://canmore.org.uk/event/608607
HY 3780 1715 Students from Orkney College, under the supervision of staff from the Orkney College Geophysics Unit (OCGU) undertook three days of geophysical surveys at Redland in July 2009. The work consisted of gradiometer, earth resistance and topographical surveys. A few lines of GPR and ERT were also carried out over the mound.
The gradiometer results were magnetically quiet, which suggests that this was not an area of intensive settlement and therefore highly unlikely to have been a broch. Although it is known that the monument was situated in bog until relatively recently, the lack of magnetic enhancement seems unlikely to have been caused by water logging and suggests a non-domestic function. In contrast, the earth resistance data reveals a stone-built circular structure within the mound, thought likely to be a chambered cairn or similar non-domestic feature. Topographic survey demonstrated that the site mound is very regular and is surrounded by a ditch
and a bank. The size and regularity of this feature may also support the idea that this site is unlikely to be a broch.
Archive: OCGU
Funder: Orkney College, UHI
Mary Saunders – Orkney College Geophysics Unit
