Structure
Like other outer planes, the Abyss is spatially infinite.
In the standard third edition D&D cosmology, the first layer shares its borders with the neighboring planes of the Windswept Depths of Pandemonium and the Tarterian Depths of Carceri; travel is possible between the Abyss and these planes at certain locations. The River Styx flows through the Abyss to many other lower planes, and as such can be used to gain access to those planes.
In the Forgotten Realms cosmology the Abyss links via the Astral Plane, to Toril, the Material Plane. A number of portals directly connect it with the Barrens of Doom and Despair, Clangor, and on occasion, with, Deep Caverns and The Fated Depths. The River of Blood originates in the Abyss and flows through the lower planes, allowing travellers access to those planes by navigating the river.
In fourth edition D&D, the Abyss lies at the bottom of the Elemental Chaos.
Read more about this topic: Abyss (Dungeons & Dragons)
Famous quotes containing the word structure:
“Why does philosophy use concepts and why does faith use symbols if both try to express the same ultimate? The answer, of course, is that the relation to the ultimate is not the same in each case. The philosophical relation is in principle a detached description of the basic structure in which the ultimate manifests itself. The relation of faith is in principle an involved expression of concern about the meaning of the ultimate for the faithful.”
—Paul Tillich (1886–1965)
“What is the structure of government that will best guard against the precipitate counsels and factious combinations for unjust purposes, without a sacrifice of the fundamental principle of republicanism?”
—James Madison (1751–1836)
“Who says that fictions only and false hair
Become a verse? Is there in truth no beauty?
Is all good structure in a winding stair?
May no lines pass, except they do their duty
Not to a true, but painted chair?”
—George Herbert (1593–1633)