Blackbone Marsh is located northeast of Joan of Arc Castle, at the junction between Mountain County and Pingyuan County.
As a mountain marsh, it is surrounded on three sides by mountains, with the only exit covered by Wild Spider Forest, two-thirds of it being marshland.
The marsh is littered with various lakes, dark rivers, puddles, and muddy grounds of all sizes.
But it has to be said, such a small area incorporates the three terrains cavalry hates the most - mountains, marsh, and forest.
After the Hundred Years' War, when the Empire's military power was at its peak, it couldn't conquer this small Blackbone Marsh, let alone now with the giant spiders of Wild Spider Forest guarding the access.
According to Horn's rough calculations, if the measurements of this world aren't mistaken, the entire Blackbone Marsh is about 7,000 square kilometers, roughly equivalent to a city like Yangcheng.
