United States, Texas, Pecos, NW side of NE-SW road on NW side of valley of Diamond Y Draw, 0.7 roadmiles NE jct. with main road in SE 1/4 of Diamond Y Spring Preserve, ca. 1.3-1.4 airmiles NNE of Diamond Y Spring. Diamond Y Spring Quadrangle.
31.01611 -102.91667
Rare among boulders of Cretaceous limestone (Washita Group) exposed at top of slope.