Category Archives: Technical

Technical information relevant to AVAS

Reverse engineering a 1970s geophysics survey of Lake Farm Roman Fort, Wimborne, Dorset

During the 1970s and 1980s, the Ancient Monuments Laboratory undertook geophysics surveys with pioneering fluxgate magnetometer equipment. This was before there was access to personal computers, and results were plotted directly onto line trace plots. For the first time, buried … Continue reading

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Interactive 3D Lidar models in Sketchfab

Getting 3D models of Lidar data from QGIS onto a model sharing site such as Sketchfab used to be a hassle, with a number of steps as described here: All this has changed with the 3.x release of QGIS.  The … Continue reading

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Re-visualising a long barrow near Old Sarum

A few weeks ago I was walking around the ramparts of Old Sarum hillfort when I spotted the cropmarks of a long barrow, and adjacent ring ditches, in one of the fields to the north of Old Sarum.  These cropmarks … Continue reading

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Environment Agency Lidar data shows archaeological potential

The announcement earlier this year that the Environment Agency was to make its Lidar data freely available was welcomed by archaeologists, who are able to use the detailed terrain height data to add a new dimension to existing aerial photographs, … Continue reading

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AVAS now on Facebook and Twitter

AVAS has finally succumbed to the power of social media, and now has a page on Facebook and an account on Twitter. If you are a user of Facebook, simply go to and ‘Like’ the page to receive Facebook updates. … Continue reading

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Become an author on the AVAS Blog

I know there are a number of members champing at the bit to contribute to the blog :-), so I have put together some simple instructions on how to become an author. In the spirit of the simple guide created … Continue reading

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Geophysics resources page

I have added a new menu link to the home page entitled ‘Geophysics’.  This links to the new Geophysics page where information on AVAS geophysics work and resources will be added. Currently the only item on the page is a … Continue reading

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