While going down the tube, I saw a small hole in the side of the tunnel. Hoping that was the end; I strained to get to it the end (Sphincter).
I couldn't of been more wrong.
So, I ended up in another cave full of more juices (Stomach). When I fell to the bottom, I felt a burning liquid on myself, and I felt myself being disolved (Gastric Juices/Hydrocloric Acid, Chemical Digestion). Then, the cave started churning and crushing me inbetween the folds (Mechanical Digestion).
Somehow proceding to go through -once again- another hole in the wall.