As the author of a popular horror novel, I was blown away by this book. As readers, we get to watch the exciting action unfold from the perspective of the monsters and the human beings - both trying to survive. The alternate dimension is vividly rendered and nightmarishly creepy. The idea of the stone formations above Indian burial mounds being portals to alternate dimensions is inspired and it is a testament to the author's skill that he makes it seem not only plausible but possible. I give this book five stars for being both a suspenseful horror novel and an exciting paranormal action/adventure novel. Highly recommended!