ulations . ▁ ▁Ign ati us ▁D onn elly ▁and ▁later ▁pro ponents ▁of ▁the ▁hyper diff usion ist ▁view ▁of ▁history ▁claimed ▁that ▁all ▁py ram id ▁structures ▁across ▁the ▁world ▁had ▁a ▁common ▁origin . ▁D onn elly ▁claimed ▁this ▁common ▁origin ▁was ▁in ▁Atl ant is , ▁while ▁G raft on ▁Elli ot ▁Smith ▁claimed ▁Egypt , ▁writing : ▁" Sm all ▁groups ▁of ▁people , ▁moving ▁mainly ▁by ▁sea , ▁settled ▁at ▁certain ▁places ▁and ▁there ▁made ▁r ude ▁im itations ▁of ▁the ▁Egypt ian ▁monuments ▁of ▁the ▁Py ram id ▁Age ." ▁ ▁An cient ▁astr onaut s ▁ ▁Several ▁pro ponents ▁of ▁ancient ▁astr onaut s ▁claim ▁that ▁the ▁Great ▁Py ram id ▁of ▁G iza ▁was ▁constructed ▁by ▁extr ater rest rial ▁be ings , ▁or ▁influenced ▁by ▁them ▁( e . g .,   through ▁their ▁advanced ▁technology ). ▁Pro ponents ▁include ▁Er ich ▁von ▁D än iken , ▁Robert ▁Ch arr oux , ▁W .   R ay mond ▁Dra ke , ▁and ▁Ze char ia ▁S itch in . ▁According ▁to ▁Er ich ▁Von ▁D än iken , ▁the ▁Great ▁Py ram id ▁has ▁advanced ▁numer ological ▁properties ▁which ▁could ▁not ▁have ▁been ▁known ▁to ▁the ▁ancient ▁Egypt ians ▁and ▁so ▁must ▁have ▁been ▁passed ▁down ▁by ▁extr ater rest ri als : ▁"... the ▁height ▁of ▁the ▁py ram id ▁of ▁Che ops , ▁multip lied ▁by ▁a ▁thousand ▁million — 9 8 , 0 0 0 , 0 0 0 ▁miles