▁Category : 1 9 0 9 ▁ships ▁Category : B att les hips ▁s unk ▁by ▁aircraft ▁Category : Hel g ol and - class ▁batt les hips ▁Category : Sh ips ▁built ▁in ▁K iel ▁Category : Sh ips ▁s unk ▁as ▁targets ▁Category : Sh ip w re cks ▁of ▁the ▁Virginia ▁coast ▁Category : World ▁War ▁I ▁batt les hips ▁of ▁Germany ▁Category : Sh ips ▁s unk ▁by ▁US ▁aircraft ▁Category : Mar itime ▁inc idents ▁in ▁ 1 9 2 1 <0x0A> </s> ▁The ▁Lat v ian ▁word ▁for ▁hill fort ▁is ▁pil sk al ns ▁( pl ural : ▁pil sk al ni ), ▁from ▁p ils ▁( castle ) ▁and ▁kal ns ▁( hill ). ▁ ▁Hill fort s ▁in ▁Lat via ▁offered ▁not ▁only ▁military ▁and ▁administrative ▁functions ▁but ▁they ▁were ▁also ▁cultural ▁and ▁economic ▁cent res ▁of ▁some ▁regions . ▁Lat v ian ▁hill fort s ▁generally ▁were ▁a ▁part ▁of ▁a ▁complex ▁consisting ▁of ▁the ▁main ▁for tr ess , ▁the ▁settlement ▁around ▁it , ▁one ▁or ▁more ▁bur ial ▁fields ▁and ▁nearby ▁rit ual ▁sites . ▁The ▁first ▁hill fort s ▁in ▁Lat via , ▁such ▁as ▁D aug male ▁hill fort , ▁appeared ▁during ▁the ▁Bron ze ▁Age . ▁Some ▁were ▁continu ously ▁inhab ited ▁until ▁the ▁late ▁Iron ▁Age . ▁ ▁During ▁the ▁Roman ▁Iron ▁Age , ▁some ▁of ▁the ▁Lat v ian ▁hill fort s ▁( like ▁ <0xC4> <0xB6> iv ut kal ns ) ▁were ▁abandoned ▁or ▁became