In the southeast corner of Caoiva lies the Shackled Chasm, a path cut through the rocky crust of the earth straight to the border. One must take care when navigating the clear blue waters of the gorge. Abstract rock formations cut deep into a winding river fed by northern mountain runoff.
— Foxhole Devblog
Shackled Chasm has been added with Update 0.26. The many mountains combine with the winding river to create critical chokepoints that both factions can use for a defensive advantage.