A stream flows over rocks in the Great Smoky Mountains National Park, Tennessee.
Joshua trees grow among ancient rocks at California’s Mojave National Preserve.
Basalt lava flows in the Mojave National Preserve, California.
A high-flying jet leaves a contrail in the desert sky over the Mojave National Preserve, California.
Waves crash over a granite jetty or, more-properly, groyne, extending into the Gulf of Mexico from the Galveston Island, Texas, beach.
A yucca tree grows near a rocky outcropping in the Mojave National Preserve, California.
Waves crash onto the rocky shoreline along San Francisco’s Lands End.