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.Bartlett, Missouri, 7.5 Minute Topographic Quadrangle, USGS, 1964 (revised 1985 The source area for the hollow stream is at and the confluence with Pine Hollow is at .
Jam Up Hollow was so named on account of its uneven and narrow terrain.
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