Thunderbird

The Nebula Award–winning author of the Alex Benedict novels and the Priscilla Hutchins novels returns to the world of Ancient Shores in a startling and majestic epic.
 
A star gate more than ten thousand years old has been discovered on a Sioux reservation in North Dakota. Travel through the gate currently leads to three equally mysterious destinations: (1) an apparently empty garden world, dubbed Eden; (2) a maze of underground passageways; or (3) a space station with a…