When you see a huge hill from your friend's place, where you are new to. You underestimate how far away it really is. You wish to climb it, so you start walking towards the foothill. You realise how far it was, as you keep walking seemingly forever.
He could see the bottom. There was a pinkish haze all around. He could see islands of ground surrounded by other ground made of other forms. There was fire too, probably lava. He felt he got so close to the ground, he closed his eyes, to ease the pain. Then he opened his eyes. He was still falling.