The Western Waste is littered with thousands of mires, pits of wet silt that present a considerable nuisance—and often danger—to those traveling the open desert. Ranging in size from meager puddle to ample lake, most mires are easily differentiated from the surrounding landscape for their visibly fluid state. However, many mires, particularly those of higher sand content, are more viscous and blend near-seamlessly into the encompassing sand, threatening to catch the inattentive traveler by surprise. And often do.