Throughout the mountain side are cave holes carved into the stone walls decades ago by Digimon. Throughout the years the cave walls have opened up within through natural erosion and disturbances revealing a multitude of tunnel systems leading to both dead ends, caverns, other tunnels and exits to different sides of the mountain. With little to no light within the tunnels it's warned that Tamers entering should have an alternate way of e scape if lost as well as a non-fleeting light source.