This is very similar to a video I watched moments after I was born. Please do not steal other peoples ideas.

Would have been humorous if say the mines did turn out to be testicles, and the camera then shows that they are a toy submarine in a toilet bowl, where a man's balls drop so far they are in the water.

I don't know anything about Hollow Knight, but I enjoyed this animation. It was well done for a first time round. Nice sets that give the viewer what they need. The use of rocks, and other elements along side the clay are a nice touch. Character design, obviously they are based off the game, but you still had to create them in an animatable format. My only gripe would be the sound editing, as the audio of the music was not balanced alongside the characters speech. Well done!

Is this not just that scrapped track from "All Things Must Pass"?