@citizensv to Science • 3 years agoThese mysterious stone structures in Saudi Arabia are older than the pyramidswww.nbcnews.comexternal-linkmessage-square0arrow-up17arrow-down10
arrow-up17arrow-down1external-linkThese mysterious stone structures in Saudi Arabia are older than the pyramidswww.nbcnews.com@citizensv to Science • 3 years agomessage-square0