This image is a horizontal colour contour map of ground conductivity of Yagan's grave site, showing an anomaly in the electromagnetic signature that was correctly thought be caused by metal artefacts buried with Yagan's head.
The authors of the image are Martin and Richard Bates. Richard Bates has released the image under the GNU Free Documentation Licence. For evidence, contact User:Snottygobble.
This image is a horizontal colour contour map of ground conductivity of Yagan's grave site, showing an anomaly in the electromagnetic signature that was correctly thought be caused by metal artefacts buried with Yagan's head. The authors of the image are