简介：A group of former military elites set out to explore an uncharted abyss, not knowing their worst nightmare is waiting for them deep beneath the ground.
A group of former military elites set out to explore an uncharted abyss, not knowing their worst nightmare is waiting for them deep beneath the ground.
A group of former military elites set out to explore an uncharted abyss, not knowing their worst nightmare is waiting for them deep beneath the ground.
