We have just completed the report on a small geophysics survey we did of a Neolithic long barrow, Gussage St Michael 10, East Dorset. It is now a low ploughed out mound situated on the same ridge as a number of other long barrows, as well as the south-west terminal of the Dorset Cursus, an enigmatic Neolithic monument 10km in length.
The barrow had not, to our knowledge, been investigated before. We obtained some fantastic results using a trusty Geoscan FM36 Gradiometer, supplied as part of the LoCATE project led by Bournemouth University and the New Forest National Park. In the resultant plot, the irregular U-shaped ditch of the long barrow is clearly defined:
The U-shape of the ditch is important, as it confirms this is a long barrow of the ‘Cranborne Chase’ type, a form of long barrow which is almost exclusively found in this part of Dorset. It has a striking similarity with Gussage St Michael 12, another long barrow just over 1km away on the same ridge, excavated in the 1930s, and referenced B in the diagram below:
The results from the survey can also be draped on a 3D model of the Lidar elevation data to show how the ditches are positioned in relation to the mound:
Although a small survey, it has made a significant contribution by confirming another ‘Cranborne Chase’ type long barrow in what is an important Neolithic landscape.
The full report can be downloaded from this link: AVAS Geophysics Survey Gussage St Michael 10 Long Barrow v1_0.pdf