Human: Please generate a brief description of a spooky scene outside a wilderness marsh with muck, insects, and a wagon wheel. Assistant: 
Thick planks of wood are layered lengthwise across the path at uneven intervals in an attempt to make the marsh passable. Even with the lumber supports, the deep muck reaches halfway to the hub of a wagon wheel. Swarms of invisible insects bite the exposed flesh of person and beast alike -- and more than one traveler has emerged from the marsh with a new, parasitic companion.