Impassable Terrain represents physical environmental barriers that are restrictive to Ground Unit maneuver. All Units ,except Aerial sub-types, are prohibited from entering, traversing, or concluding a Move Action, Dash, or Charge within the footprint of an Impassable Terrain piece. Any movement that would result in a Unit Base overlapping the terrain boundary is categorized as an illegal move and cannot be resolved.
- Units possessing the Aerial Unit Sub-Type are exempt from these movement restrictions. These Units may traverse the airspace above Impassable Terrain or conclude a Move Action on top of the terrain footprint without penalty.
- Impassable Terrain does not inherently obstruct Line Of Sight. Units may draw a Trace through the terrain boundary to Nominate a Target on the opposite side.
- Establishing Base Contact with Impassable Terrain does not grant the Cover status.