arrison ing ▁the ▁castle . ▁As ▁a ▁result , ▁the ▁Her lings berg ▁War ▁was ▁precip itated , ▁during ▁which , ▁in ▁ 1 2 9 1 , ▁the ▁Bishop ▁of ▁H ild es heim ▁captured ▁the ▁Har lib urg ▁after ▁a ▁four - month ▁sie ge , ▁and ▁had ▁it ▁slight ed . ▁Its ▁stone ▁was ▁used ▁inter ▁al ia ▁to ▁build ▁the ▁water ▁castle ▁of ▁ ▁W ied el ah ▁between ▁ 1 2 9 2 ▁and ▁ 1 2 9 7 , ▁some ▁ 2   km ▁sout heast . ▁The ▁stone ▁was ▁also ▁used ▁in ▁the ▁construction ▁of ▁the ▁nearby ▁castle ▁of ▁V ienen burg ▁in ▁the ▁town ▁of ▁the ▁same ▁name ▁in ▁ 1 3 0 0 . ▁ ▁Today ▁the ▁site ▁of ▁the ▁former ▁Har lib urg ▁is ▁covered ▁by ▁dense ▁forest , ▁only ▁the ▁circular ▁r amp arts ▁and ▁mo ats ▁remaining . ▁ ▁In ▁literature ▁ ▁The ▁contemporary ▁poet , ▁Heinrich ▁Ros la , ▁from ▁N ien burg ▁published ▁the ▁Latin ▁ep ic ▁poem , ▁Her lings berga ▁about ▁the ▁Har lib urg . ▁ ▁Bibli ography ▁▁ ▁Ernst ▁Andreas ▁Friedrich : ▁Die ▁W älle ▁der ▁Har lib urg , ▁pp . ▁ 1 3 7 - 1 3 9 , ▁in : ▁W enn ▁Ste ine ▁re den ▁kön nten . ▁Vol . ▁IV , ▁Land buch - Verlag , ▁Han over , ▁ 1 9 9 8 , ▁ ▁External ▁links ▁▁ ▁Information ▁on ▁the ▁Har lib urg ▁with ▁site ▁plan ▁ ▁Art