: 1 9 9 8 ▁films ▁Category : English - language ▁films ▁Category : C BC ▁Television ▁shows ▁Category : Can ad ian ▁television ▁films ▁Category : T ele vision ▁series ▁re union ▁films ▁Category : 1 9 9 0 s ▁Christmas ▁films <0x0A> </s> ▁D ry ▁stone , ▁sometimes ▁called ▁dry stack ▁or , ▁in ▁Scotland , ▁dry st ane , ▁is ▁a ▁building ▁method ▁by ▁which ▁structures ▁are ▁constructed ▁from ▁stones ▁without ▁any ▁mort ar ▁to ▁bind ▁them ▁together . ▁D ry ▁stone ▁structures ▁are ▁stable ▁because ▁of ▁their ▁unique ▁construction ▁method , ▁which ▁is ▁character ized ▁by ▁the ▁presence ▁of ▁a ▁load - b ear ing ▁fa ç ade ▁of ▁carefully ▁selected ▁inter lock ing ▁stones . ▁ ▁D ry ▁stone ▁construction ▁is ▁best ▁known ▁in ▁the ▁context ▁of ▁stone ▁walls , ▁tradition ally ▁used ▁for ▁the ▁boundaries ▁of ▁fields ▁and ▁church y ards , ▁or ▁as ▁retain ing ▁walls ▁for ▁ter rac ing , ▁but ▁dry ▁stone ▁sculpt ures , ▁buildings , ▁brid ges , ▁and ▁other ▁structures ▁also ▁exist . ▁ ▁The ▁art ▁of ▁dry ▁stone ▁wall ing ▁was ▁ins cribed ▁in ▁ 2 0 1 8 ▁on ▁the ▁UN ES CO ▁representative ▁list ▁of ▁the ▁int ang ible ▁cultural ▁her itage ▁of ▁human ity , ▁for ▁dry ▁stone ▁walls ▁in ▁countries ▁such ▁as ▁France , ▁Greece , ▁Italy , ▁Cro atia , ▁Switzerland ▁and ▁Spain . ▁ ▁History ▁▁ ▁Some ▁dry ▁stone ▁wall ▁constru ctions ▁in ▁north - west ▁Europe ▁have ▁been ▁dated ▁back ▁to ▁the ▁Ne