Caverns:
All non-blocking terrain features becomes blocking terrain features instead. All units must be deployed at NOE level. No unit may be moved to cruising level. No artillery or indirect-fire ranged combat attacks can be made. All units ignore Jump Jets and Jump Pack special equipment. Caverns cancels the Jungle, Sniper’s Steppe, Storm, Swamp, and Tornado planetary conditions. It is canceled by the Barrens, Craters, Earthquake, and Urban planetary conditions. “It reminds me of home: dark, damp, and crowded.” —MechWarrior Boris Vassilev, on planet Halsted Station in Prefecture II
