Jesse Wilson 
On The Savage Trail [EPUB ebook] 

Late night drinking leads to an old ghost story told among four friends, whose lives are in a rut. It’s time for a change.
To spice things up, they decide to go ghost hunting out in the deep nowhere of Colorado. Even the locals don’t want them going on that trail. Not tonight, at least. The friends go out, hunting for the impossible, mostly just to get out of the city and recharge their lives.
But when the night falls, imaginary horror proves to be all too real. And under a full moon, their innocent camping trip turns into a night of terror.