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Topographic survey measures underwater features of a crannog in Loch Glass, indicating its archaeological significance.
Access to the crannog was by canoe. From a central peg, radial measurements were made by tape measure to the shore line, starting on a bearing of 0 deg, then every 45 deg around the compass. Divers extended the radial measurements to the base of the crannog on the loch bed and measured water depth with a levelling staff. The loch bed was scanned for artifacts by the divers. A scale drawing was produced from the survey measurements. Underwater photographs were taken to record significant features.
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Richard Guest (2025) studied this question.
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