The Endless Wall is sited in Chaos. It floats among eternal in a Sea of Entropy, thousands of feet high and immeasurably long. Nobody knows who made it or when it came about. Some believe it to be a seed created by the lawful gods to bring order to chaos.
The Endless Wall is not random or chaotic, it is uniform in height and thickness. This supports the belief that it is not part of Chaos, but a seed of stability to bring order where there is chaos.
- unknown, excerpt from the tome "Mysteries of the Endless Wall"
The Endless Wall is made of matter absorbed from Chaos. Over time, perhaps hundred of years, this matter solidifies into a tawny stone that is super hard and impervious to sound and corrosion. The wall and the stone have a low chance of reflecting magic and psionics back on the caster.
Garaldrarg, an ancient bastion at the heart of Sapthiladân, was crafted entirely with blocks from the Endless Wall. It has yet been learned how the stone titans were able to gather such large quantities of material from the Endless Wall.
An aberration, a minion of Chaos, stands next to Neeth-Theen's new Chaos warlord. Alien to this world, it focuses a cyclopean eye to the distant walls. The view narrows, becoming binocular. The aberration scans the block pattern, noting that one block in every five is frighteningly familiar. Disturbed by the sight of the enemy citadel, he says to the general, "It is built with blocks of the Endless Wall!" Looking a little paler, he goes on, "You don't feel it, but we of Chaos do. We stand a mile from the walls, yet I can feel the place's negative entropy." His eye quivers and rolls up into his head, trying to shield itself from invisible energies radiating outward from Sapthiladân's imposing walls, which many claim are impregnable to anything but the heel of Atlas.
- from the Godspawn Saga