39/50
honestly this could have been bigger and the terrain base could have been less flat, but since its small the latter can be ignored.
the boulder the howitzer is placed on doesnt make much sense, honestly. there's no real way it could have gotten to that shape naturally without human shaping, and if they did shape it they might as well just have used the area next to the boulder and used the boulder as a prop for an overhanging tarp
i'd have gone with a small cliff rising out of the terrain or the area just in front of the boulder dropping down in angle to form a small cliff. it removes the necessity of the wall as well as make it more realistic.
and as a general comment for terrain: please people make it at least a 32x48 baseplate large because anything smaller doesn't show your complete skill.