Devil dune

Devil dunes were a kind of animated magical hazard made of sand that were found, albeit rarely, in sandy deserts and wastelands.
==Properties==
Mundane or even magically sped sand dunes could move at most several feet per hour, only threatening to smother sleeping creatures overnight and bury cities over long periods. By comparison, a devil dune possessed a kind of animosity towards interlopers, seeming to actively hunt down and destroy invaders inside its domain.
A typical devil dune was approximately long, wide, and tall. When pursuing a victim, it could reach speeds of about per minute, or per hour. A devil dune had an intrinsic ability to know where a trespasser was in its domain, and was able to relentlessly pursue it for as long as it was present.
Once a devil dune "caught" a victim, it buried them alive inside its bulk, eventually smothering them if escape was not effected. There was no known means of permanently destroying or stopping a devil dune, with soften earth and stone slowing one down for a time, and earthquake shattering and dispersing its form for several weeks.
==Occurrences==
Devil dunes were thankfully rare, but were known to exist in the Anauroch desert.
==Appendix==
===Appearances===
===References===
Category:Hazards