The Depths

One of the most contested and mysterious members of the cosmology, The Depths are connected to the Material Plane unlike any other. All other planes, even the Worlds of Light and Dark who are "adjacent" to the Material Plane, are thought to float within the Sea of Dreams and be surrounded by Ethereum except The Depths, which seems to be physically connected to the Material Plane somehow. Because of this, there is actually a way outside of planar travel to reach The Depths. Deep in the earth there are cave systems that go miles underground and lead into The Depths, although you wouldn't know it without magical detection because there is no physical way to tell where the Material Plane ends and The Depths begins. The plane itself resembles vast, seemingly never ending underground tunnels and caverns of varying size and length. Some tunnels get as small as rats or come to dead ends, while others lead to massive caverns the size of large cities. The Depths is an incredibly dangerous place that is full of predators who stalk in the dark and poisonous plants (not to mention the poisonous predators) but it also has a fair amount of sentient races as well. Many, but not all, of these races are cruel or harsh in response to the environment they exist in however. 
== Planar Effects ==
*Divine Severance: The Depths may be attached to the Material Plane but for some reason the gods of that plane have issues reaching their servants who find themselves there. Any creature that prepare spells using a connection with a deity or divine force from the Material Plane (namely Clerics and Druids) requires two extra hours to make that connection and finish preparing the spells. If that creature finds themselves in The Depths for seven days, their connection with the divine power begins to fade. After the first week, the creature can prepare one less of each level of spell they derive from a divine connection. This fading connection worsens each week and the creature can prepare one accumulative less spell of each level until it is completed severed. Returning to the Material Plane and spending eight hours meditating on the renewed connection with your divine force will remove these penalties.
== Known Denizens ==
*Dark Elves
*Grey Dwarves
*Deep Gnomes