The Accursed Valley

Dylan — a popular climber who is well known on social media. Her friend, geologist Clay, discovers an unknown rock in the forest thickets of Kentucky that is unfamiliar to both tourists and professionals, and Dylan decides to be the... first to conquer it, of course, live streaming the event. Along with her boyfriend Luke, Clay, and his assistant Sylvia, they set off on a hike towards impending internet fame, after which all four mysteriously disappear without a trace. Seven months later, near a nearby highway, the remains of three oddly mutilated bodies are found.
One has been reduced to a perfectly processed skeleton with not a single piece of flesh or skin; the second has all its organs removed; the third has no eyes, ears, tongue, or fingers.
What happened to the climbers?
Who killed them?
And is something sinister, far more terrifying than any human, responsible for their deaths?