I don't remember now how I found out about this film - with that said, I'm so glad I did find it and that I watched a VHS rip on YouTube.
This movie is insane. As soon as I saw the concept, I knew I had to watch it. But it exceeded any expectations I had. It starts with how they kill the snakes; I don't consider this as a spoiler as it's in the plot summary. They use a freaking BULLDOZER! They say there are 80 THOUSAND snakes in the pit when they find it. You need serious firepower for that.
The ridiculousness only goes up from there. I definitely recommend this film if you enjoy cult horror, or even a kung fu/martial arts fan, you would enjoy. I got Shaw Brothers vibes.
The one thing I didn't love is what I assume to be the live skinning of a snake, as well as the killing of many snakes in that first scene setting the pace for the murder rate through the runtime. I'm posting this as a warning for this who watch and aren't expecting to see a snake heart still beating, or a snake and a badger fighting to the death. If it makes you feel any better, it really makes you root for the snakes! The badger part was really unnecessary, and goes on for way too long.
Watching the snakes get their revenge is pretty insane. So many snakes! The snake budget for this film must have been astronomical. It's awesome watching them cause destruction in large numbers, including a massive Boa.
In all, give this a try. Skip the animal cruelty if you would rather avoid it - they make it obvious when it's about to happen. Aside from that, I really enjoyed it and I'm glad I stumbled upon it.