In which country is the "Skeleton Canyon"?

Well the word Canyon gave it away. plus it was in English.. lol.

The first I have heard about this canyon. Even in many old Hollywood western movies I have seen, this canyons never been mention brought up. Superstition, Mountain and Apache junction, Tombstone has been some locations mention but not this.

Raphus, you would think so but... some questions translate the meaning of the original name Into English without saying they did it.