Moss-covered rocks in a stream at the Great Smoky Mountains National Park, Tennessee.
Rocks along the shore line of Favorite Channel near Juneau, Alaska.
The rocky beach of Cozumel, Mexico’s eastern shore.
The waters of San Francisco Bay lap at the rocky shore of the Crissy Field beach.
A stream’s waters rush over rocks in the Great Smoky Mountains National Park, Tennessee.
Detail of a railroad rail spotted in Addison, Texas.
A pile of rocks on the rim of Texas’ Palo Duro Canyon.