As part of the Three Stone Project, the surveying of the Hemlock Stone using a drone was undertaken in October 2015, aiding in the creation of a 3D model of the stone and therefore helping establish the origin of the stone, whether it was man-made or naturally occurring. Videography was undertaken by Alex Wilkinson, www.alexwilkinsonphotography.co.uk with drone footage undertaken by Ocuair http://ocuair.co.uk