▁of ▁the ▁fo oth ills , ▁but ▁most ▁live ▁in ▁rug ged ▁grass land ▁and ▁p ine ▁forest ▁zones ▁higher ▁up . ▁The ▁Ig or ot ▁number ed ▁about ▁ 1 . 5 ▁million ▁in ▁the ▁early ▁ 2 1 st ▁century . ▁Their ▁languages ▁belong ▁to ▁the ▁northern ▁Lu zon ▁subgroup ▁of ▁the ▁Philipp ine ▁languages , ▁which ▁belong ▁to ▁the ▁Aust ron esian ▁( Mal ay o - Pol yn esian ) ▁family . ▁ ▁Et ym ology ▁From ▁the ▁root ▁word ▁gol ot , ▁which ▁means ▁" mount ain ", ▁Ig ol ot ▁means ▁" people ▁from ▁the ▁mountains " ▁( Tag alog : ▁“ Mount aine er ” ), ▁a ▁reference ▁to ▁any ▁of ▁various ▁eth nic ▁groups ▁in ▁the ▁mountains ▁of ▁northern ▁Lu zon . ▁Their ▁languages ▁belong ▁to ▁the ▁northern ▁Lu zon ▁subgroup ▁of ▁the ▁Philipp ine ▁languages , ▁which ▁belong ▁to ▁the ▁Aust ron esian ▁( Mal ay o - Pol yn esian ) ▁family . ▁ ▁The ▁end onym s ▁If ug ao ▁or ▁I p ug ao ▁( also ▁meaning ▁" mount ain ▁people ") ▁are ▁used ▁more ▁frequently ▁by ▁the ▁Ig or ots ▁themselves , ▁as ▁ig or ot ▁is ▁viewed ▁by ▁some ▁as ▁slightly ▁pe jor ative , ▁except ▁by ▁the ▁I bal o ys . ▁ ▁Cord ill era ▁eth nic ▁groups ▁ ▁The ▁Ig or ots ▁may ▁be ▁roughly ▁divided ▁into ▁two ▁general ▁sub groups : ▁the ▁larger ▁group ▁lives ▁in ▁the ▁south , ▁central ▁and ▁western ▁areas , ▁and