Landscape Red Rock Canyon More than 500 million years ago, Red Rock Canyon was at the bottom of an ocean basin. Mostly limestone (and dolomite) accumulated in this ocean basin for over 250 million years during the Paleozoic Era. The limestones contain the fossils of sea life that flourished during that time. Enter Lake Tahoe Lake Tahoe is a large freshwater lake in the Sierra Nevada of the United States. Lying at 6,225 ft (1,897 m), it straddles the state line between California and Nevada, west of Carson City. Enter Assorted Images Various captures featuring a variety of scenes. Enter