That's some of the most intriguing imagery I've seen. I wasn't familiar with the the Holy Mountain, so I ended up tracking down a copy.
Not for the faint of stomach... especially if you don't like to watch exploding conquistador toads fighting Aztec iguanas, but damn that's a wild ride. No country does surrealism like Mexico. Thanks for the rabbit hole!
Side note, the entire time I was watching this I was thinking - damn, this is really similar to Santa Sangre in tone and style - turns out it's by the same director, Alejandro Jodorowsky.