Doniana Swamp, if placed on modern Earth, would be a rare wetland park, provided it was fully developed.
Untouched wetlands are outright nightmares for travelers. Dense undergrowth completely covers the ground, alongside densely grown trees, meaning one couldn't know whether the ground in front of them was solid land, mud, or a puddle until they stepped on it.
Or even a deeply hidden river beneath the foliage.
Numerous invisible banshees roamed about, vigilantly scouting for any Extraordinary Creatures lying in ambush. As for investigating the terrain, that responsibility was directly handled by Mia in the team.
The banshees' reconnaissance confirmed the distribution of the surrounding Extraordinary Creatures groups. Based on this information, Miel formulated the next route forward—cleverly avoiding these creatures' active areas to steer clear of unnecessary combat.
Adopting such a cautious progression strategy was, of course, based on tactical considerations.