Windblown dust, ash, and silt accumulate in depressions to form dust sinks or silt basins. The largest known example is the Sea of Silt, but smaller sinks exist in almost any low-lying terrain. Even a light wind stirs the dust into billowing clouds. On calm days, a dust sink appears to be a smooth plain of pale gray or dun powder. Appearances are deceptive. The dust is too light to support a traveler’s weight, but it is thick enough to suffocate anyone who falls in. Sometimes, the ground beneath the powder is uneven, concealing a dangerous drop. One misstep, and a traveler can disappear beneath the dust.
Large bodies of silt often extend like the rivers of old into more solid terrain, following narrow channels called estuaries. Many estuaries of silt are shallow enough for human-sized travelers to wade with care. Very tall creatures such as giants can navigate correspondingly deeper silt; a giant can wade through silt 10 feet deep without difficulty.
Many large sinks and estuaries are sprinkled with islands of high ground, isolated from the “mainland” by stretches of dust of varying depths. Some of these islands are rocky protrusions just large enough to accommodate a giant or two, and others can support an entire village. Miles of silt have sheltered many islands over the years from the touch of defiling magic, and those islands remain surprisingly verdant.
Perhaps no terrain on Athas offers greater contrast
than the Sea of Silt. What on other worlds would be a
great body of water is instead a basin filled with choking dust. The silt obscures vision and bears no weight,
making travel a tremendous challenge beyond the
known shallow pathways.
Dust sinks are smaller areas of silt that bring the
same hazards to other Athasian terrain. They underscore the devastated environment while presenting
interesting challenges.
Features
Dust sinks are common near the Sea of Silt, where
wind-blown dust collects in low areas. They can also
be areas that once held water but were defiled in
ages past. Heroic tier characters can be introduced to
the perils of dust sinks through small pits of silt or a
moat of silt that surrounds a location they must reach.
In many areas of Athas, such as those near Altaruk,
narrow estuaries of silt intrude into adjoining terrain.
The Sea of Silt is an excellent location for characters of upper heroic through epic levels. Its depth can
vary suddenly, and few safe trails are known. Skill
challenges might involve protecting supplies from silt
storms, charting a safe course, finding safe islands of
refuge, and repairing a silt vessel.
Silt can be flat or rest in wavelike drifts. When the
wind is strong, the silt can rise up to obscure vision.
Visibility can vary during an encounter as the wind
changes (perhaps randomly) each round.
Dust can be a hazard, forcing characters to hold
their breath. Characters covered in silt might find
that some of their survival days become depleted,
making them more susceptible to sun sickness. Visually, characters are covered in gray-white powder
and look like ghosts.
Travel across silt requires magic or special vehicles such as silt schooners, and travel is necessary
to explore distant islands. These islands are the sole
sources of vegetation and water in the Sea of Silt, and
adventurers can explore, gather supplies, or even
be shipwrecked on an island. Some isles also hold
secrets of Athas’s past.
Crossing the sea by riding in a silt vessel or walking a narrow path can lead to exciting encounters,
especially with foes that can use forced movement to
maneuver the characters into deeper silt.
Creatures
Giants are iconic inhabitants of the Sea of Silt, dwelling on most of the islands. Other inhabitants include
anakores, brohgs, cloud rays, floating mantles, oasis
beasts, silt elementals, silt horrors, silt runners, and
silt sharks. Islands hold a greater variety of creatures.
Flying beasts skim the surface of the sea, and on rare
occasions, travelers might come across traders or raiders in silt vehicles.