Being inside the cave is like being inside the throat and then the body of a snake. When moving through long avenues inside of it with your own light out and only the glow from other lights in the distance, you have the sensation that it could be you who is moving through the cave or that the cave is travelling through the inside of the mountain and you are stationary inside of it being brought along to the mouth of the cave or instead of where you thought - much deeper underground.