human
Produce a detailed written description of a foreboding scene outside a mountain in the wilderness with shifting rubble, bark, and a crevice.
assistant
Though wide enough to hold several hikers walking abreast, the trail falls sharply off to the west. Shifting rubble underfoot forces travelers to clutch at the branches of stunted pines, leaving bits of bark and broken brown needles to litter the ground. A large crevice can be seen in the distance halfway to the summit.