ANCIENT tunnels and under there also. BET> CHOSEN the geographical regions in many continents and built on top of. BUT also OF COURSE other ones, and "newer seeming ones" who go into the ancient ones. Really also Antarticer and hitting those ancient tunnels is gonna cut the head off the fkn snake. NO use wasting troops, rods of GOD that shit. REAL MIL insane to think that ice wall is not weather mod.