Silt Sea
From UTRPG
The Silt Sea is a gigantic "sea" of silt. The city of Balic lies nearest it.
The winds carry the silt great distances; anyone who goes near must contend with silt storms. However, there are mud flat islands in the sea which often house treasures and even settlements. Silt skimmers, wind-pulled "boats", can take desperate hardy travelers there. However, many skimmers are operated by even more desperate raiders.
The main inhabitants of the islands are giants, which are tall enough to wade through the silt. Some are friendly, and sell their hair to the merchants of Balic. Others raid the city and nearby villages and forts. The more ferocious beasthead giants, wielders of the Way, are shorter and tend to stay away from the edges, and so are rarely encountered.
Other strange creatures, such as silt horrors, can also be found in the silt. Due to the lack of food they're always hungry, which is very unfortunate for anyone with a reason to travel there. An entity called the "Caller in Darkness" uses strange psionic powers to draw travelers further into the silt to Giustenal, from which they never return. It's no surprise the area is home to lots of ruins, including at least one "drowned" city.
