Wadi and Gully

[plloyd1010]

Wadis/Gullies in Desert Rats / AK are at ground level ; there's nothing like being 20m lower. So, there was no LOS problem for being in a gully, at that time.
4th Ed rules made entry of a gully by a vehicle possible. However, the -20m location ruined the whole thing.
And you have to carefully read the 4th Ed Terrain charts notes to realize it.

Wadi definition in AK/DR: Similar to a Hill, but instead a depression or dried river bed, this terrain makes movement difficult and offers the
defender some defensive benefits.

So clearly not "ground level", but an "anti-hill" with these affects:

• 2 MP for foot, motorized and mechanized prohibited. (More restrictive than the 4th edition.)
  
• Units occupying Wadi hex may not be spotted by enemy units more than 3 hexes away. (That's actually worse than limiting terrain.)
  
• -1 to direct fire against target in wadi from range of 2 or more hexes. (A lesser effect than the 4th edition.)