The top pic shows three crosses etched into the face in relation to a trail that followed a line across into the valley
My guess is that the face is pointing in the direction of the valley and that the mouth of the face has a small arrow appearing near it's nose area, in what appears to be a cave looking image in that one area
I had not identified these crosses. But I don't have a clear picture but here in the yellow circle there is a differential in the stone that looks like a hole. The water runs down the side of the stone stake.