Hot Springs National Park Geology

Hot Springs National Park is in the Zigzag Mountains, a small range of the Ouachita (Wash'-i-tah)Mountain system in the Interior Highlands, which form the only major topographic relief for a vast area of the midwestern and south-central United States. The topography was formed in late Paleozoic times (400 million years ago) by tremendous geological forces that acted to uplift, fold, fault, fracture, and harden inland seabed sediments. Subsequent erosion has led to the formation of the present ridge and valley landscape. The narrow steep ridges of the Zigzag Mountains, are capped with novaculite rock outcrops. These outcrops are unique to the Ouachita Mountains, and the finely grained structure of the novaculite is known for its superior quality as a natural whetstone.

Selle SMP is turning 70 the way any dedicated cyclist would like to: by maintaining a trim, lightweight, padding-free,...
Price subject to change | Available through
Featured Park
Zion National Park, a place home to the Narrows, Canyon Overlook, Emerald Pools, a petrified forest, a desert swamp, springs and waterfalls, hanging gardens, wildflowers, wildlife and more!
Featured Wildlife
The bighorn sheep is the mammalian symbol of Colorado Parks and Wildlife and Colorado's official animal. Colorado is home to the largest population of the species anywhere. The animals are five to six feet long with a tail three to six inches in length.