Game drive system

of 42 low-walled stone structures or cairns, up to hundreds of feet in length, built for game drive systems.

These slight walls served as devices that permitted hunters to direct or herd game animals—like bison, sheep, deer, or elk—toward men waiting with weapons.

Hunters herded the bison and drove them over the cliff, breaking their legs and rendering them immobile.

The Blackfoot Indians called the buffalo jumps "pishkun", which loosely translates as "deep blood kettle".

This type of hunting was a communal event which occurred as early as 12,000 years ago and lasted until at least 1500 AD, around the time of the introduction of horses.