United States, South Dakota, Pennington, Black Hills National Forest. Along Ditch Creek off Forest Rd 291, 3/4 mile S of campground (and just S of Forest 612/Porcupine Draw).
43.947222 -103.841389
43° 56' 50" N 103° 50' 29" W; TRS: T1S R2E sec 23 E 1/2