Bone Collector's Lair

Publisher's blurb: Tucked away within this partially-eroded mountain lies a weather-beaten altar, piled high with bones. An icy stream surrounds it, encircled by pillars. Beyond waits an ancient stone gate, runes carved into its surface. Tunnels—many of them filled with water—break away from the main cavern, leading deeper into the mountain. To enter this shadowy place, you must first cross a steep, rocky gorge. Beyond that wait the statues of robed figures, holding swords and guarding the entrance.