Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
This is one of many movies made in the 1960s about the mythological superhero Hercules who is usually seen shirtless with oiled up muscles. In this movie he runs around wearing little more than a miniskirt and calf-high boots. The story takes place in 12th century Poland when Genghis Khan and his Mongol soldiers are trying to conquer the country. There's also a love story involving two beautiful women. Hercules is known for his great strength and we see him perform a few acts of strength here - holding up a castle door, moving a giant rock, bending heavy pieces of metal including some jail cell bars, and fighting other strong men. He wrestles with a giant crocodile, too (which is odd since crocodiles don't live within 1500 miles of Poland.) And he also fights a giant snake.
After saving the capitol of Poland from the Mongols, Hercules returns to a village in the country to see his girlfriend. But the Mongols have followed him. They shoot flaming arrows to lure him into falling in a large pit where they have put a giant snake. Hercules calls for help. One of the Mongols calls down to him to tell him they plan to kill him to revenge their leader who lost the recent battle. He shoots an arrow into the pit, but misses Hercules. When Hercules is silent, they assume he is dead and leave. Then Hercules wrestles with the snake, which wraps itself around him. Finally he pulls the arrow out of the wall of the pit and stabs the snake in the head repeatedly, killing it.
The snake fight is nothing unusual, but the arrow is a nice variation. The snake we see is totally fake. We don't even see shots of a real snake in the montage, as we usually do in such scenes. It's not even a very good fake to my eye, but I've seen too many real snakes to know how the audience would react to it. In 1964 it might have been seen as realistic, but probably not.
You read a summary of the entire plot as well as watch the movie over on TheSilverScream.com.