Millennia ago, the feyspire of Shae Tirias Tolai crossed over from Thelanis to Xen’drik, where the giants used powerful magic to shatter its protective wards and destroy it. After the feyspire’s people were taken as slaves, the ruins of the site were quickly swallowed by the jungle.
Today, those ruins stand as a memorial to a brutal time. Numerous expeditions seek the lost feyspire, but the Traveler’s Curse is particularly potent in the dark valley where the ruins are said to stand. The PCs might be charged with locating Shae Tirias Tolai, either as part of an academic expedition or at the behest of one of the feyspires bound to Eberron after the Day of Mourning. Perhaps the ancient magic that still protects the ruins offers a clue to reconnecting the existing feyspires to Thelanis, or to thwarting the vengeance of Taer Lian Doresh in the Fortress of Fading Dreams