Jam Up Hollow is a valley in Shannon County in the U.S. state of Missouri. The intermittent stream of the valley is a small west flowing tributary of Pine Hollow about four miles southeast of Delaware on Mahans Creek.[1] The source area for the hollow stream is at 37.0747°N -91.4719°W and the confluence with Pine Hollow is at 37.0831°N -91.4367°W.
Jam Up Hollow was so named on account of its uneven and narrow terrain.[2]