the devil's dyke | eight mile-long mega-ditch in the cambridgeshire landscape | megalithomania Published 4 years ago • 7.6K plays • Length 10:08 Download video MP4 Download video MP3 Similar videos 1:45:08 an evening with the national trust archaeologists 1:09:06 earth grids and ley lines | the invisible super-science of the megalith builders | megalithomania 46:20 ancient megalithic sites in peru you have likely never heard of 10:17 did one of the egyptian pyramids explode 12,000 years ago?