OTHRYS

The first and largest layer of Carceri is Othrys. Each orb in this infinite string is dominated by a dismal, scarlet swamp dotted by fetid bogs, stagnant lakes, and great swaths of dangerous quicksand. Desolate lifeless trees stand like silent watchers in the gloomy twilight that pervades all of Carceri, their branches twisting together to form massive web-like growths that stretch out over many miles in some cases.

The orbs in the Othrys string are close enough apart to be separated only by 500 feet of darkness, though the lightless nature of Carceri makes even the nearest sphere nearly invisible from one to the next. There are several known exceptions, most notably Mount Othrys, a single solitary mountain peak rising from the fetid bog that connects two orbs together. Here is where the fallen titan lord Cronus makes his home amidst a complex swarm of lightning storms and driving wind.

The River Styx winds through all of the Othrys orbs, somehow, its flow continuing to defy conventional laws.