▁built ▁in ▁O bern iesen berg , ▁and ▁in ▁ 1 9 7 5 ▁a ▁school ▁and ▁multip ur pose ▁room ▁were ▁finished . ▁ ▁In ▁ 1 9 6 9 , ▁electric ▁street ▁lights ▁came ▁to ▁the ▁village ▁and ▁in ▁ 1 9 7 0 , ▁a ▁central ▁water ▁supply ▁was ▁added . ▁ ▁In ▁ 1 9 8 0 ▁Hinter b ühl ▁was ▁developed ▁as ▁a ▁resident ial ▁area , ▁and ▁in ▁ 1 9 8 4 ▁it ▁was ▁connected ▁to ▁the ▁se w age ▁treatment ▁plant ▁at ▁B ün zen . ▁ ▁In ▁ 2 0 0 0 ▁a ▁quarter ▁of ▁the ▁econom ically ▁active ▁population ▁worked ▁in ▁agricult ure ▁and ▁two ▁third s ▁were ▁commut ers . ▁ ▁At ▁the ▁beginning ▁of ▁the ▁ 2 1 st ▁Century ▁K all ern ▁possessed ▁neither ▁public ▁transport ation ▁or ▁sh ops . ▁ ▁K all ern , ▁except ▁for ▁the ▁ham let ▁of ▁O bern iesen berg , ▁belongs ▁to ▁the ▁parish ▁of ▁Bos w il - K ell ern . ▁ ▁Geography ▁ ▁K all ern ▁has ▁an ▁area , ▁, ▁of ▁. ▁ ▁Of ▁this ▁area , ▁ ▁or ▁ 7 7 . 6 % ▁is ▁used ▁for ▁agricult ural ▁purposes , ▁while ▁ ▁or ▁ 1 3 . 4 % ▁is ▁for ested . ▁▁ ▁Of ▁the ▁rest ▁of ▁the ▁land , ▁ ▁or ▁ 9 . 3 % ▁is ▁settled ▁( build ings ▁or ▁roads ). ▁ ▁Of ▁the ▁built ▁up ▁area , ▁housing ▁and ▁buildings ▁made