Dipper-Deep

From the introduction:

You have reached the crest of the highest among a group of imposing hills, covered by rough stems that lend the landscape a shimmering violet-blue hue. A steady breeze moves the abrasive blades that run across the backs of your hands. While you contemplate the horizons, the winds shift and an inexplicable dry odor reaches your nostrils. The sensation is followed by a many-headed gurgling, hollow and moaning, as if from a choir of a thousand dead.