I read this around 2003-2006. I found it in my school library.
As far as I know it was a standalone novel, with no sequels.
The world / place this guy gets transported to (possibly time travel? I don't remember much) has a sort of medieval setting. He helps the people there do something or other, and eventually gets transported back to where he left from by a similar phenomenon. I most specifically remember the beginning, and a desert or rocky place and some energy based thing transporting the guy.
As far as I know it was a standalone novel, with no sequels.
The world / place this guy gets transported to (possibly time travel? I don't remember much) has a sort of medieval setting. He helps the people there do something or other, and eventually gets transported back to where he left from by a similar phenomenon. I most specifically remember the beginning, and a desert or rocky place and some energy based thing transporting the guy.