[Rules] Does limiting terrain block LOS?

[Juiceman]

Sometimes you just have to overcome the poorly written rules of PG, with that said on the TEC for Modern, it describes Sand Dunes as "Rolling Hills of loose sand."  I played it as a hill, block LOS.  As one who has experienced sand dunes at home and abroad, they tend to block LOS especially if you are in the trough.  As Peter mentioned the current PG TEC lists Sand Dunes as Blocking Terrain.