The Guadalupe River flows over rocks near Gruene, Texas.
Granite blocks along the Galveston, Texas, seawall absorb the pounding surf of the Gulf of Mexico.
Waves crash onshore at El Mirador, Cozumel, Mexico.
The dry desert landscape of California’s Mojave National Preserve.
Rocks and piers on a beach in Roatan, Honduras.
Waves froth against rough rocks on the eastern shore of Cozumel, Mexico.
A stream flows over rocks in the Great Smoky Mountains National Park, Tennessee.
Ancient rocks cast late afternoon shadows in California’s Mojave National Preserve.