A solid allelochemical compound is found in the storage sacks along the malpighian tubule system within the giant arthropods native to this region of the planet. Easily harvested and cheaply refined, this substance makes for a particularly potent form of drug that has a very high return on the black market. As an invaluable source of income for its neighbouring worlds, the bog has become a common battleground for competing mercenary groups looking for their share of the profits. The terrain and dense foliage within the sinkhole provide natural defenses that make identifying and dislodging enemy elements particularly difficult. The travertine terrace formations however, provide ideal positions for scouts to gain insight on enemy movements. Below the forest canopy, offworld invaders can easily hide from view and shelter themselves using the massive trees or even the immense molted carapaces of the valuable invertebrates. Stepping out of or ejecting from a ‘Mech in this environment is not recommended as the swamp itself teems with swarms of bugs and predators big or voracious enough to view anything as vulnerable as a pilot, as edible.