▁buried ▁their ▁dead ▁in ▁the ▁main ▁chamber ▁hall ▁( K ammer d iele ) ▁or ▁a ▁secondary ▁hall ▁and ▁then ▁filled ▁the ▁gra ves ▁in . ▁He ▁thus ▁concluded ▁that ▁there ▁were ▁close ▁links ▁between ▁the ▁build ers ▁of ▁the ▁meg al ith ic ▁sites , ▁the ▁F unnel be aker ▁culture ▁and ▁members ▁of ▁the ▁G lob ular ▁Am ph ora ▁culture . ▁By ▁contrast , ▁the ▁bur ial s ▁of ▁the ▁Single ▁Gra ve ▁culture ▁always ▁took ▁place ▁in ▁the ▁upper ▁part ▁of ▁the ▁earth ▁fill ▁( F üll b oden ) ▁of ▁the ▁grave ▁chamber ▁and ▁access ▁to ▁the ▁site ▁was ▁generally ▁achieved ▁by ▁force ▁from ▁above . ▁This ▁suggested ▁that ▁they ▁were ▁carried ▁out ▁by ▁str angers ▁who ▁no ▁longer ▁had ▁any ▁conne x ion ▁with ▁the ▁bur ial ▁concept ▁of ▁the ▁build ers ▁of ▁the ▁meg al ith ic ▁sites . ▁▁ ▁Material ▁ ▁In ▁developing ▁an ▁architecture ▁that ▁was ▁su ited ▁in ▁terms ▁of ▁building ▁material ▁and ▁shape ▁to ▁the ▁significance ▁of ▁the ▁cult ▁sites , ▁the ▁build ers ▁of ▁these ▁meg al ith ic ▁tomb s ▁only ▁had ▁available ▁to ▁them ▁the ▁raw ▁materials ▁of ▁gla cial ▁depos its . ▁These ▁materials , ▁particularly ▁the ▁large ▁stones ▁and ▁b ould ers ▁of ▁the ▁gla cial ▁er rat ics , ▁were ▁selected ▁and ▁worked ▁in ▁order ▁to ▁build ▁the ▁sites . ▁It ▁was ▁difficult ▁therefore ▁to ▁overcome ▁the ▁vari ability ▁of ▁the ▁raw ▁materials ▁in ▁terms ▁of ▁quality ▁and ▁quantity . ▁▁ ▁S ources ▁▁▁ ▁External ▁links