Black Hills: A Novel by Dan Simmons

I found this book to be a fascinating account of Paha Sapa, a Lakota man who finds himself present at several key moments in Western history, including the Battle of Little Bighorn and the construction of Mount Rushmore. There's a definite fantasy/sci-fi slant to this novel, as Paha Sapa has extraordinary powers of perception and lives with Custer's ghost. I thought the ending was a bit deus-ex-machina, but otherwise, I found this book both beautiful and enjoyable.