ils ede , ▁the ▁Tot eng rund ▁part ▁of ▁the ▁he ath , ▁the ▁old ▁he ath land ▁churches ▁in ▁E gest orf ▁and ▁Und el oh , ▁the ▁nature ▁information ▁cent res ▁in ▁D öh le , ▁Nieder ha ver beck ▁and ▁Und el oh ▁and ▁the ▁Piet z mo or ▁mar sh ▁near ▁Schne ver d ingen . ▁Also ▁to ▁be ▁found ▁within ▁the ▁nature ▁reserve ▁are ▁Bron ze ▁Age ▁tum uli , ▁historic ▁paths ▁and ▁boundary ▁markers , ▁walls ▁of ▁stones ▁depos ited ▁by ▁gla ci ers , ▁old ▁sheep ▁pens ▁and ▁bar ns ▁with ▁outside ▁steps ▁known ▁as ▁Tre pp ens pe icher . ▁ ▁Local ▁mo or land ▁sheep ▁- ▁the ▁He id sch n uck en ▁- ▁are ▁gra zed ▁on ▁the ▁he ath ▁in ▁order ▁to ▁maintain ▁it . ▁This ▁method ▁is ▁supp lement ed ▁by ▁mechanical ▁measures ▁such ▁as ▁m ow ing , ▁or ▁the ▁cutting ▁of ▁tur ves , ▁a ▁method ▁known ▁as ▁Pl ag gen , ▁and ▁the ▁controlled ▁use ▁of ▁burning ▁during ▁the ▁winter ▁months . ▁These ▁measures ▁ensure ▁the ▁necessary ▁re ju ven ation ▁of ▁the ▁he ather . ▁The ▁inc urs ion ▁of ▁p ine ▁trees ▁has ▁to ▁be ▁held ▁at ▁bay ▁by ▁regular ▁cutting ▁back ▁( Ent k uss el ung ). ▁With ▁the ▁exception ▁of ▁the ▁two ▁roads ▁crossing ▁the ▁area , ▁there ▁is ▁a ▁general ▁ban ▁on ▁motor ised ▁vehicles ▁in ▁order ▁to ▁protect ▁the ▁terrain ▁as ▁well ▁as ▁animal ▁and ▁plant ▁life . ▁ ▁P ione