Lidar models
Great Serpent Mound, Ohio modelled from lidar survey. Original lidar data is credited to Ohio Department of Transport (downloaded from Sample Point Clouds here: http://appliedimagery.com/download/). This is higher resolution than the freely released statewide coverage. Plenty of other models based on this data to be found out there in the wild, but I'm quite pleased with this visualisation.
Roman forts/camps at Cawthorn, North Yorkshire. DTM produced from Environment Agency lidar. Here using additional visualisation techniques to provide emphasis to an otherwise straightforward google earth drape. Lidar data © Environment Agency copyright and/or database right 2018. All rights reserved. Re-used under Open Government Licence 3.0
Hardwick Park, Derbyshire. Modelled from the new Environment Agency National Lidar Programme dataset with vector overlay from detailed 1990s ground surveys undertaken by Trent & Peak Archaeology. Some slight registration errors now evident (this was pre GPS and digital mapping), but satisfied we managed to record all of the major earthworks (park pale, parish boundary, earlier field systems) even if some of the subtler detail of ridge and furrow does seem to have eluded us. Weeks in the field versus hours at the desk (but ground truthing is always going to be necessary!).
The Roman town of Venta Icenorum at Caister St Edmund, Norfolk. Modelled from EA lidar with georeferenced overlay of aerial photograph published in the Times in 1929, one of the earliest (and most spectacular!) examples of archaeological air-photography. EA lidar data © Environment Agency copyright and/or database right 2018. All rights reserved. Re-used under Open Government Licence 3.0
Courtesy of Nordrhein-Westfalen open lidar data after reading about the discovery of a large Augustan period marching camp beneath woodland at Bielefeld-Sennestadt and wondering if I couldn't come up with a slightly better lidar plot (I leave that for you to judge).
Navan fort courtesy of OpenDataNI and a little bit of processing by yours truly. Very detailed 20cm resolution (but some of that may be lost in the conversion process). Acquired by the Historic Environment Division; released under Open Government Licence v3.0
Like all of the examples here this has been produced using QGIS 3.0 and its very handy Qgis2threejs plugin. Export via gltf results in some loss of resolution (if I want to keep the download size down), and I wish I could control the size of the base more easily, but it makes for a very straightforward workflow.