Harold looked out from the crevice and thought:
What I need to do is get out of this crevice -- no light, too damp, no room to move -- and get out into the world. But I gotta watch out for the sunlight. It might be too bright for my eyes. They might've become too adjusted to this dark.
He moved outward but suddenly stopped. The light was too bright.
He closed his eyes in a wincing expression, as if he had been hit.
Then he lowered his head and opened his eyes to let his sight adjust to the brightness.
He went from there.