Rift to the Plane of Air

Publisher's blurb: The ground breaks away into the sky through this rift to the plane of air. Mist coils around the fractured entrance, and a shattered stone platform still hangs above it. It is engraved with strange arcane markings and surrounded by a circle of carved stones. A depression in the earth leads down to the rift. Higher up stone outcrops overlook the entrance to the realm of sky, and green trees stand tall; their roots firmly planted in soil.