Mount Nirg
The tallest of the Theskian peaks, Mount Nirg is a rampart of barren rock and loose, gravelly slopes that winds almost ten miles through the eastern reaches of the range. Its lower reaches are littered with hundreds of ancient tombs and the remnants of old stone roads built by some folk lost to history, and the mountain itself has an even worse reputation than the rest of this bleak range.
In a high, rocky tor near the summit lurks a drow outpost of the city of Phaundakulzan, which lies deep in the Underdark about halfway between the Thesk Mountains and the Thaymount. The outpost is nearly impossible to reach without flying, but the drow use a series of seemingly endless staircases that spiral upward through the mountain. The occupants of the outpost monitor the movements of the Red Wizards up and down the path between Nethentir and Phent. The drow can scarcely believe the zulkirs have given up their warlike ways and keep a close eye on them at all times. Just why the drow care about Thayan movements is unclear, but one theory favored by those in Telflamm who know of the outpost is that they are waiting for Thay to launch an all-out attack against someone. When they do, the drow plan to sweep in and take the Plateau of Thay—or at least Thaymount—for themselves.