The Divine Hammer Plane's World Tree extended upward, growing along the handle of the hammer through its tunnel until it reached near the opening and then sprouted vines, which climbed onto the Mud Black Crystals surrounding it before slowly contracting.
As the vines withdrew into the tunnel, the Mud Black Crystals were also pulled into the tunnel, completely sealing the entrance.
Because Black Crystals can insulate against soul-penetrating insight, it would be very difficult for even the Undead to discover the space inside unless they dug through the crystals.
While these concealment efforts were underway, dozens of Airships set course into the vast Void.
