Thank you to Cemetery Dance for providing a review copy. 
I'm not sure how this book escaped my notice for so long, but it was so good! I love horror based on mythology, so this was right up my alley. I was shocked to discover that The Eater of the Gods is a debut. It reads like the best of the veteran horror writers. The creep factor was quite high, as I hate enclosed spaces and am scared of getting trapped underground. Highly recommend!