At the Bloodstorm.nl Events we distinguish the following terrain pieces:
A Building - Impassable Terrain, Obscured Line of Sight
B Castle - Impassable Terrain, Obscured Line of Sight
C Skull Mountain - Impassable Terrain, Obscured Line of Sight
D Hill - Open Ground, Vantage Point, Beyond the Crest
E Wood - Difficult Terrain, Woodland Boundaries, Arboreal Gloom, Dangerous Terrain (Cavalry, Chariots)
F Ruins - Dangerous Terrain, Difficult Terrain, a unit or model counts as being in full cover if more than half the model or models within the unit is within the ruin
G Marsh - Dangerous Terrain, a unit fully within the marsh counts as defending a low linear obstacle, does not grant cover
H Field - Difficult Terrain, does not grant cover
I Rubble - Dangerous Terrain, a unit or model counts as being in partial cover if at least up to half the model or models within the unit is within the rubble
Walls - as event staff sees fit, Low Linear Obstacles