▁suggesting ▁in ▁turn ▁that ▁the ▁lake ▁itself ▁had ▁been ▁a ▁sacred ▁place . ▁Further , ▁Br ink ▁suggests ▁that ▁the ▁focus ▁of ▁this ▁settlement ▁area ▁migr ated ▁south wards ▁to ▁Sk ir ings sal r , ▁now ▁H use by , ▁attract ed ▁towards ▁the ▁sh or eline ▁by ▁a ▁significant ▁fall ▁in ▁sea - level ▁between ▁the ▁Iron ▁Age ▁and ▁the ▁establishment ▁of ▁the ▁hall ▁at ▁H use by . ▁ ▁The ▁earliest ▁written ▁reference ▁to ▁Sk ir ings sal ▁is ▁in ▁the ▁ 9 th - century ▁Y ng ling atal , ▁where ▁it ▁is ▁said ▁that ▁the ▁legend ary ▁pet ty ▁king ▁Half dan ▁Wh ites h anks ▁died ▁in ▁T oten ▁but ▁was ▁buried ▁in ▁a ▁m ound ▁at ▁Sk ir ings sal . ▁Similarly ▁the ▁head ▁of ▁Half dan ▁the ▁Black , ▁a ▁ 9 th - century ▁king ▁of ▁V est fold , ▁is ▁said ▁by ▁the ▁F agr sk in na ▁to ▁have ▁been ▁buried ▁at ▁Sk ir ings sal . ▁The ▁S ög ub rot ▁af ▁n ok k rum ▁for n kon ung um ▁reports ▁that , ▁in ▁the ▁time ▁of ▁the ▁legend ary ▁Sig urd ▁H ring , ▁there ▁was ▁an ▁important , ▁annual ▁sacrifice ▁made ▁at ▁Sk ir ings sal , ▁which ▁was ▁attended ▁by ▁the ▁whole ▁population ▁of ▁V iken . ▁On ▁the ▁basis ▁of ▁these ▁reports ▁Norwegian ▁historian ▁Ger hard ▁Mun the ▁wrote ▁in ▁ 1 8 3 8 ▁that ▁T j ø ll ing ▁church ▁stood ▁on ▁the ▁site