Walking to Aldebaran

A strange and uncomfortable novella (in all the best ways). The story follows someone who is lost in an alien artifact which gives pathways across the universe. The artifact is full of lost creatures who have wondered in and are unable to get out.

The main protagonist was part of a human investigation to look in more detail at an entrance to this world, discovered on the edge of the solar system. He gets separated from the rest of the team and ends up wandering the passageways between worlds on his own.

The ending goes in delightfully dark and twisted ways. This is uncomfortable and psychological stuff. There are some wonderful questions about time and space asked, along with questions on the meaning of humanity. For a short novella, this was impressively deep!