"Head-Smashed-In Buffalo Jump" is the name of an archaeological site in Alberta. (This is a literal translation of what the site is called
in the Blackfoot language, Estipah-skikikini-kots.) Head-Smashed-In was a traditional buffalo hunting site of the
Blackfoot people and their ancestors for thousands of years.
Before the days of firearms or horses, Native hunters used to
drive buffalo they were pursuing off a steep cliff at this location; a semi-permanent camp near the base of the cliff was used to
process the dead buffalo (drying meat, tanning hides, etc.) According to legend, the grisly-sounding name
"Head-Smashed-In Buffalo Jump" came about when a boy recklessly stood too close to the base of the cliff and
a buffalo fell onto his head, killing him.
Here are a few good books about the Head-Smashed-In Buffalo Jump: