A young cavalry officer finds his woman tortured by the Apaches and blames the Army for not properly protecting the outpost, so becomes a deserter and an avenger, stalking and killing Indians without warning.
| Release Date | December 4, 1970 | |
|---|---|---|
| Status | Released | |
| Original Title | La spina dorsale del diavolo | |
| Runtime | 1h 44min | |
| Budget | — | |
| Revenue | — | |
| Language | English | |
| Original Language | English | |
| Production Countries | Italy, United States of America, Yugoslavia | |
| Production Companies | Jadran FilmHeritage Enterprises Inc.DDL Cinematografica | |