Valley of Fire State Park is the oldest state park in Nevada, USA and was designated as a National Natural Landmark in 1968. It covers an area of almost 42,000 acres and was dedicated in 1935. It derives its name from red sandstone formations, the Aztec Sandstone, which formed from great shifting sand dunes during the age of dinosaurs. These features, which are the centerpiece of the park's attractions, often appear to be on fire when reflecting the sun's rays.