DILLON PASS | YELLOW MOUNDS OVERLOOK This overlook is placed within the most colorful portion of Badlands geology. Yellow, purple, gray, and striped reddish beds display the sequence of Yellow Mounds, the Interior Paleosol, Chadron, and Brule formations respectively, from bottom to top. ~National Park Service The yellow mounds were formed when the sea drained, … Continue reading BADLANDS NATIONAL PARK – DILLON PASS | YELLOW MOUNDS OVERLOOK #EXPLORESD →