There are plenly of rocks to hide behind, you all think you are hidden
Reinert: You scramble up over the rocks on the hill. When you reach the top you see(only Reinert is in a position to see this):
Below you, there's a ravine separating this line of hills from the next ridge. And there's a battle going on down there.
It looks like a dozen goblens and half a dozen orcs going at it pretty fiercely. The goblins are fighting with bows and spears, the orcs have axes and polearms, and one of them appears to have armor, too. Most of the fighters don't have any sort of armor, but all of them have cloaks.