▁ 3 , 2 8 2 . 5 8 ▁sq .   km . ▁Some ▁of ▁them , ▁however , ▁already ▁migr ated ▁to ▁Mountain ▁Province , ▁Ap ay ao , ▁C ag ay an , ▁and ▁Ab ra . ▁As ▁of ▁ 1 9 9 5 , ▁they ▁were ▁counted ▁to ▁be ▁ 1 0 5 , 0 8 3 , ▁not ▁including ▁those ▁who ▁have ▁migr ated ▁outside ▁the ▁Cord ill era ▁region . ▁ ▁Kal ing a ▁territory ▁includes ▁flo od pla ins ▁of ▁Tab uk , ▁and ▁R iz al , ▁plus ▁the ▁Ch ico ▁River . ▁ ▁Gold ▁and ▁co pper ▁depos its ▁are ▁common ▁in ▁Pas il ▁and ▁Bal bal an . ▁ ▁Tab uk ▁was ▁settled ▁in ▁the ▁ 1 2 th ▁century , ▁and ▁from ▁there ▁other ▁Kal ing a ▁settlement s ▁spread , ▁pract icing ▁wet ▁rice ▁( p ap ay aw ) ▁and ▁sw idden ▁( u wa ) ▁cultiv ation . ▁ ▁Kal ing a ▁houses ▁( f uro y , ▁b ulo y , ▁ful oy , ▁p ho yo y , ▁b ilo y ) are ▁either ▁oct ag onal ▁for ▁the ▁wealth y , ▁or ▁square , ▁and ▁are ▁elev ated ▁on ▁posts ▁( a ▁few ▁as ▁high ▁as ▁ 2 0 - 3 0 ▁feet ), ▁with ▁a ▁single ▁room . ▁ ▁Other ▁building ▁include ▁gran aries ▁( al ang ) ▁and ▁field ▁sh eds ▁( sig ay ). ▁ ▁The ▁name ▁Kal ing a ▁came ▁from ▁the