The Tidus Stair is an interesting rock formation that has the form of several terraces forming a giant set of stone stairs overlooking part of the Merchant Coast. It is located southeast of Ratchet, on the coast of the Northern Barrens. A pair of tauren, Islen Waterseer and Mahren Skyseer, sit and fish and converse with water spirits there.
In the RPG
A half-day's travel north of Ratchet is the coastal fishing village of Tidus. The town is unremarkable except for the set of ancient stone stairs that extend from the beach and vanish beneath the waves. Local legend says that they descent to a Kaldorei city that fell into the ocean after the collapse of the first Well of Eternity. Adults and children of the village dive down as deep as they can manage, but thus far none has found anything but a continuing staircase.