There was yellow slime on the ground, a secretion from the insects as they burrowed.
Fortunately, the tunnel was quite large, often more than three meters high, making it spacious for people to walk through.
The Werewolf's keen sense of smell allowed him to distinctly discern the direction of the insects that left these odors.
In the darkness, rustling sounds began to emerge, as if a horde of monsters were surging towards them.
The leading Big Beard NPC Brigadier glanced at the display on the arm of his Mechanical Battle Armor, which showed countless dense green dots, and with a stern look on his face, he bellowed, "We're now in the active area of the Insect Race! Everyone, prepare for battle!"
Leonard Churchill glanced at the Brigadier General's Mech, which was clearly much more functionally complete than the suits Seven Brown had worn previously, equipped with a lot of high-tech gear designed for combating insects.
Like this scanner that could detect life forms.