When Dan Kehoe is shot off his horse by Ma McDade, he falls just across a footbridge on a piece of sandy ground with some small brush around him. When the girls approach him, he is lying in a more barren patch of ground with very little brush.
Near the end when Kehoe leaves the women, it is raining very hard. Several hours later when Ma checks where the gold was buried, the ground is perfectly dry with no evidence of the rain.
At about 14:30 when Kehoe (Clark Gable) is laid up in bed the shadow of the boom mic can be seen moving on the wall to the right of him.