Mountain Of Bones By Christopher Krovatin

Ian was the one who chased the majestic buck into the forest. Kendra and PJ followed him. They all hoped to return to the hiking trail before anyone noticed they were gone. However, the mountain had other plans for them: dark, sinister plans that only nightmares are made of. Now they don't know where they are. They don't know how to get home. They don't know what gruesome creatures lurk in the shadows-but when they find out, will they be able to defeat these monsters and escape the mountain together?
This first book in the Gravediggers series is a scary, mysterious, wild ride that will thrill readers to the very last page.