Not GNSS-surveyed. OSGB from the Rees 1989 sheet (MP/STO0861). WGS84 is converted from that grid. Google Earth imagery of the same stones can sit about 1.5 m east of this plan; we do not warp the sheet to match GE. 91 and 93 sit on the surviving stones. The diamond at 91 is an indicative stonehole, to the left of the stone. 92 and 94 are the original marks, not Cleal coordinates. LiDAR: Environment Agency 1 m composite, OSGB, © Environment Agency, Open Government Licence. github.com/TimDaw37/stonehenge-plan