Land of Nod, The Artifact by Gary Hoover. Gary is another author I met thru my Facebook and thru Budo. Gary's book is sci-fi and it also is very good. I love stories that have portals and this is one of them.
Gary's book is available at Amazon.com thru Kindle the same as Budo's. And no I'm not going to get my soap box and tell how wonderful it is to get the books on your computer :)
This is a great story and Gary does a great job :)