Moander's Footstep

These mountains were believed to be the raised lips of a footprint of the god Moander. The peaks contained the headwaters of the Pox River, credited with killing off a whole civilization of humans known as the Apothecs. These mountains were largely viewed as a source of evil and death by the people of Netheril
The largest and most influential temple to Moander was built in a secret glen at the headwaters of The Pox, deep within the southern section of Moander’s Footsteps, during the spring of 1173 NY. These were the mounts that suffered under the feet of the god during the age before the dragons ruled Toril. The followers of Moander believed that their god set foot here in order to bring the power of the Creator Races to an end. Poisoning their water and food, Moander, along with the deities of the dragons, caused these fell creatures to die out, though it’s not certain whether all the creatures died here on Toril, or if they simply moved elsewhere in the multiverse.
The building was shaped like a teardrop on its side, with the point facing due east, paved in a black ether that absorbed all light. No weapon or magic could harm the buildings, and no lockpick or trap-setting device could affect the doors or windows. Within this unholy temple, three despoilers led a group of 40 clerics. These priests ministered and provided for over 1,000 human and nonhuman followers. The faithful were renowned for following every edict and rule to the letter like zombies.
Conversely, a temple to Jannath, the Great Mother, is also located within these storied mountains, built at the bottom of the legendary Sky Stairs of Beldestan.