▁often ▁used ▁to ▁enc lose ▁the ▁open ▁space ▁under ▁large ▁natural ▁b ould ers ▁or ▁out cro ps . ▁ ▁The ▁higher - lying ▁rock - rich ▁fields ▁and ▁past ures ▁in ▁Boh emia ' s ▁south - western ▁border ▁range ▁of ▁Š um ava ▁( e . g . ▁around ▁the ▁mountain ▁river ▁of ▁V yd ra ) ▁are ▁often ▁l ined ▁by ▁dry ▁stone ▁walls ▁built ▁of ▁field - st ones ▁removed ▁from ▁the ▁a rable ▁or ▁cultural ▁land . ▁They ▁serve ▁both ▁as ▁cattle / she ep ▁f ences ▁and ▁the ▁lot ' s ▁borders . ▁Sometimes ▁also ▁the ▁dry ▁stone ▁ter rac ing ▁is ▁apparent , ▁often ▁combined ▁with ▁parts ▁of ▁stone ▁m ason ry ▁( house ▁found ations ▁and ▁shed ▁walls ) ▁that ▁are ▁held ▁together ▁by ▁a ▁cl ay ▁and ▁p ine ▁need le ▁" compos ite " ▁mort ar . ▁▁▁ ▁The ▁dry ▁stone ▁wall ing ▁tradition ▁of ▁Cro atia ▁was ▁added ▁to ▁the ▁UN ES CO ▁Represent ative ▁List ▁of ▁the ▁Int ang ible ▁Cultural ▁Heritage ▁of ▁Human ity ▁in ▁November ▁ 2 0 1 8 , ▁alongside ▁those ▁of ▁Cy pr us , ▁France , ▁Greece , ▁Italy , ▁Sloven ia , ▁Spain ▁and ▁Switzerland . ▁In ▁Cro atia , ▁dry ▁stone ▁walls ▁() ▁were ▁built ▁for ▁a ▁variety ▁of ▁reasons : ▁to ▁clear ▁the ▁earth ▁of ▁stone ▁for ▁cro ps ; ▁to ▁del ine ate ▁land ▁ownership ; ▁or ▁for ▁shelter ▁against ▁the ▁b ora ▁wind . ▁Some ▁walls ▁ ▁date ▁back ▁to