▁mix ▁of ▁water ▁buff alo ▁d ung ▁and ▁Ash , ▁but ▁are ▁now ▁more ▁commonly ▁c ement ed ▁together . ▁Typ ically , ▁the ▁walls ▁are ▁assemble d ▁first , ▁and ▁then ▁the ▁cap stone ▁is ▁increment ally ▁elev ated ▁to ▁the ▁height ▁of ▁the ▁walls ▁by ▁means ▁of ▁a ▁wood ▁sc aff old ing ▁which ▁is ▁inserted ▁log ▁by ▁log ▁at ▁altern ating ▁ends . ▁Once ▁the ▁cap stone ▁is ▁at ▁the ▁correct ▁height ▁beside ▁the ▁walls ▁it ▁is ▁sl id ▁into ▁place ▁above ▁the ▁tomb . ▁Altern ately , ▁some ▁tomb s ▁are ▁constructed ▁by ▁drag ging ▁the ▁cap stone ▁up ▁a ▁fabric ated ▁r amp ▁and ▁then ▁assemb ling ▁the ▁side w alls ▁below ▁it , ▁before ▁removing ▁the ▁r amp ▁structure ▁to ▁let ▁the ▁cap stone ▁rest ▁upon ▁the ▁walls . ▁O ften , ▁but ▁not ▁always , ▁the ▁finished ▁structure ▁is ▁decor ated ▁by ▁a ▁professional ▁stone ▁car ver ▁with ▁symbol ic ▁mot ifs . ▁The ▁car ving ▁alone ▁can ▁at ▁times ▁take ▁over ▁a ▁month ▁to ▁complete . ▁ ▁References ▁in ▁literature ▁and ▁fiction ▁ ▁Gallery ▁ ▁See ▁also ▁Bil ger ' s ▁rocks ▁British ▁meg al ith ▁architecture ▁Irish ▁meg al ith ic ▁tomb s ▁List ▁of ▁meg al ith ic ▁sites ▁Meg al ith ic ▁monuments ▁in ▁Europe ▁Meg al ith s ▁in ▁Me ck len burg - Vor p omm ern ▁Meg al ith s ▁in ▁the ▁Ur als ▁Nature ▁worship ▁Nord ic ▁meg al ith ▁architecture ▁P lain ▁of ▁J ars ▁r anging