Sunrise over Horta Volcanic Island
Algae and bacteria create spectacular colors at the run-off channels of a geyser in the Upper Geyser Basin of Yellowstone National Park
Lava rocks, rounded by the ocean at Napo'opo'o beach in  Kealakekua Bay State Historical Park Hawaii
Lava rocks, rounded by the ocean at Napo'opo'o beach in  Kealakekua Bay State Historical Park Hawaii
Lava rocks, rounded by the ocean at Napo'opo'o beach in  Kealakekua Bay State Historical Park Hawaii
Lava rocks, rounded by the ocean at Napo'opo'o beach in  Kealakekua Bay State Historical Park Hawaii
Lava rocks, rounded by the ocean at Napo'opo'o beach in  Kealakekua Bay State Historical Park Hawaii
Petroglyphs, rock carvings  made by ancient Hawaiians Kaloko Honokohau National Historical Park,  Hawaii
Petroglyphs, rock carvings  made by ancient Hawaiians Kaloko Honokohau National Historical Park,  Hawaii
Lava rocks, rounded by the ocean at Napo'opo'o beach in Kealakekua Bay State Historical Park Hawaii
Lava rocks, rounded by the ocean at Napo'opo'o beach in  Kealakekua Bay State Historical Park Hawaii
Lava rocks, rounded by the ocean at Napo'opo'o beach in Kealakekua Bay State Historical Park Hawaii
See photo in original gallery.