The Legend of 5 Mile Cave

The film is based on the 'Colossal Cave Legend'. In 1884, five or six men robbed a mail train near Pantano, a small town near Tucson, Arizona Territory, and south of Colossal Cave, and nabbed about $83,000 in cash and gold. They hid all of the loot and it was never found. The story was also told in the movie Cave of Outlaws (1951) and "Death Valley Days" TV Series episode, 'Up the Chimney' (1968).

When Sam is telling Tommy the story about Shooter Green arriving in Tucson, while Shooter is riding his horse and the camera pans to the right along a split rail fence, you can see a modern-day, green colored pagoda styled walkway light sticking up over the lower fence rail.