The entirety of Junkworld is mountains of trash, piled so deep that digging into the depths sheds light into the different epochs of the ancient civilization that created it. Junkworld is sparsely inhabited with a few scattered ramshackle settlements, and while it is unknown how these inhabitants arrived here, they all have the spark of intelligence. These inhabitants scavenge the lands for survival, braving the dangers that lurk just out of sight behind every trash pile or burrowed under-foot. They clothe themselves in assortments of plastic sheets, torn cloth, metal plates and scrap wood lashed together. Buildings and public areas are built out of the same. These inhabitants have also managed to collect and foster compost heaps for use in agriculture and use the indigenous plant life in gardens and small fields.
Junkworld is populated by various species of animals that evolved from the vermin of the original civilization, and who ironically have now long out lasted it. These animals are the equivalents of the rats, pigeons and cockroaches of the society. Having lived in this environment over the ages they have evolved in grotesque and strangely beautiful ways. Some travel in swarms while others lead a solitary existence. Again some are benign and even domesticated, while others are predatory and violent. In addition to these life forms there are the broken automata that wander serving obscure functions. They organize and rearrange trash endlessly, hunt only specific breeds of vermin, or organize into armies around gigantic structures to process specific components of the trash and distill it producing different forms of matter.
The inhabitants of Junkworld dig mines winding deep under the earth to excavate exotic treasures. The materials they find are incorporated into their society, some of these technological remnants can be used as cyphers. In their villages legends are told of great treasures and entire other ecosystems buried in the depths. Recently, some of the digs have exposed parts of what appear to be a vast network of tunnels. The creators of these tunnels have never been seen, though distant rumblings hint at the presence of something monstrous.