Geophysical Survey

Date 2012

Event ID 992723

Category Recording

Type Geophysical Survey

Permalink http://canmore.org.uk/event/992723

NO 6170 6575 and NO 61370 65610 Resistance and magnetic surveys were conducted, taking in the entire surviving area of the Roman fort (except for the modern parish churchyard), along with its annexe and part of the temporary camp to the W. The defences showed clearly over most of their course, with the 'parrot beak' style gates, but the impression of a triple ditch, gained in the past from the air, seems to have been caused by the rampart showing as a third linear cropmark in aerial views. The magnetic survey showed what are probably lines of pits in the interior, which may represent the postholes of barrack blocks. The supposed annexe showed clearly, but there were some signs in the magnetic data that its broad, single ditch might cross those of the fort, which may or may not suggest that the two are not contemporary.

Large areas of rig and furrow were detected by the resistance survey, both inside and outside the fort, as well as a number of ring features, which seem likely to represent roundhouses. The magnetic survey found faint signs of a linear feature crossing the fort interior diagonally. At least two possible posthole founded structures stood at right angles to this, and so may represent contemporary rectangular timber buildings beside a track, which does not relate to the Roman occupation.

Archive: The Roman Gask Project

Funder: The Roman Gask Project

DJ Woolliscroft, The Roman Gask Project

B Hoffmann,

2012