It was almost as dark above ground as it had been below. Foggy drizzle dripped from the trees and he had no idea where he was. A forest it seemed. He sat on wet grass by the remains of his tomb and spat out the dirt and wiped futily at the clothes which would never get clean. There was mud in his hair and blood on his face and his hands. On his side was a hole in his shirt that led to a hole in his stomach. The bleeding had stopped and the mess was congealed, gooey with puss. He didn't feel pain.
He decided to get up and walk. He didn't care which way he went. He was lost anyway. If there was a path, he didn't notice. He just walked, through the trees, over rocks, by a stream, over a small wooden bridge. There were trail signs posted at random, but he didn't bother to read them or follow. It registered vaguely that he must be in some kind of park. That meant there were people somewhere. That meant he ought to get out before it got light. None of that made any sense, but it is what he thought. It was instinct.
But he didn't make it out right away. He could sense that the dawn was arriving, so he looked for a cave, or some bushes in which he could hide. He found an old half burned out tree that would do. He hunkered down in it, and waited. Day came. Day lasted awhile. He kept his eyes open and noticed some things. He noticed he never got hungry. He never got thirsty. He never got tired, or bored. He had no desires. No physical urging. It was all very new and he felt that it was and there was a certain satisfaction, as if patience was something he'd never achieved until now.
He had leftover instincts as well. He put a thumb to his wrist and could feel a faint pulse. He noticed his lungs weren't filling with air. He was breathing but not with his mouth or his nose. It seemed his whole body was breath, that each pore in his skin absorbed air and ejected it too. This soaking in of the atmosphere was pushing the blood through his veins, and into his brain. He knew what things were. Trees, for example, and sky. He watched animals go through their motions, birds in their frenzy at daybreak. The squirrels, racing and chasing. Insects buzzing. Bees humming. The rain stopped and the sky became blue, with some clouds. He waited and watched for the sun to go down, and followed its direction to find out where he was. When it grew dark again he followed it west.