▁ice , ▁where ▁it ▁was ▁easier ▁to ▁kill ▁with ▁hunting ▁weapons . ▁ ▁Henry ▁K else y ▁described ▁a ▁h unt ▁on ▁the ▁northern ▁pla ins ▁in ▁ 1 6 9 1 . ▁First , ▁the ▁Indians ▁surrounded ▁a ▁her d . ▁Then ▁they ▁would ▁" g ather ▁themselves ▁into ▁a ▁smaller ▁Com pass ▁Keep ing ▁ye ▁Be ast ▁still ▁in ▁ye ▁middle ". ▁The ▁hun ters ▁killed ▁as ▁many ▁as ▁they ▁could ▁before ▁the ▁animals ▁broke ▁through ▁the ▁human ▁ring . ▁ ▁In ▁the ▁dog ▁days , ▁the ▁women ▁of ▁a ▁Black foot ▁camp ▁made ▁a ▁cur ved ▁f ence ▁of ▁tra vo is ' ▁tied ▁together , ▁front ▁end ▁up . ▁R unn ers ▁drove ▁the ▁game ▁towards ▁the ▁en closure , ▁where ▁hun ters ▁waited ▁with ▁l ances ▁as ▁well ▁as ▁b ows ▁and ▁ar rows . ▁ ▁The ▁H id ats a ▁near ▁Missouri ▁River ▁conf ined ▁the ▁buff alo ▁on ▁the ▁weak est ▁ice ▁at ▁the ▁end ▁of ▁winter . ▁When ▁it ▁crack ed , ▁the ▁current ▁swe pt ▁the ▁animals ▁down ▁under ▁th icker ▁ice . ▁The ▁people ▁ha u led ▁the ▁d rown ed ▁animals ▁ash ore , ▁when ▁they ▁emer ged ▁down stream . ▁Although ▁not ▁h unted ▁in ▁a ▁strict ▁sense , ▁the ▁nearby ▁Mand an ▁secured ▁b ison , ▁d rown ed ▁by ▁chance , ▁when ▁the ▁ice ▁broke . ▁A ▁tr ader ▁observed ▁the ▁young ▁men ▁" in ▁the ▁dr ift ▁ice ▁le ap ▁from ▁piece ▁to ▁piece , ▁often ▁falling ▁between