Shambling Cenote

The stench of rot and decay mixed with stagnant water wafts up from this deep cenote. Hanging from the edges of the hole like hair, thick vines droop nearly to the water’s surface 100 feet below. At the bottom, dozens of mindless undead shamble about, perpetually milling through the waist-deep water. The undead set upon any creatures that fall into the cenote, tearing bodies apart and ripping flesh from bones. A strong necromantic aura suffuses the whole area, and most creatures that die in the cenote or near the edge on the surface rise as undead soon after.