"First Peoples Buffalo Jump" State Park, Montana

When the Indians hunted the Bison before they had guns or domestic horses they used bows and arrows or used the terrain to help them.  Using rock cairns as guides toward the drop off and being dressed in a Bison skin they would herd the animals carefully toward the cliffs.  Once they were close enough the Indians who were guiding them in would cause a stampede and the animals had no choice but to go over the cliff because it looked like a hill going down from their angle.  Below, the men, women and children would be waiting to finish the kill if needed and would skin the animal for the hide for shelter and clothing and the meat for food and the bones for tools and other implements.  They used what they killed.
We are getting a history lesson from an Indian forest ranger.

Notice the "drive lane" heading toward the cliff.

The edge of the drop off cliff is behind me on my right and is 50-60 feet down.

Give this a read.  Just double click and it will enlarge, click and it will return.

Mom and baby.

These are hard to look at.  It was said that if "we get rid of the buffalo, we get rid of the Indian".  In the mid 1800s the slaughter of the animal took less than 3 years and brought the numbers down to less than 3000 in the nation. Hard to believe this is how the first people were treated.