Ever seen this “groovy” rock? Checkerboard Mesa is a prominent formation located near the East entrance of Zion National Park. Because of the way sand was deposited by wind 185 million years ago, we can see horizontal lines stretching across the sandstone today. This phenomenon is known as cross bedding, and Zion is home to some of the best examples of it in the world! The vertical grooves or “joints” form as the rock expands and contracts from daily heating and cooling. Cross bedding and joints work together to give this iconic formation a groovy, checkerboard look. Taking the Zion Mt. Carmel Highway to see this park feature is a must while visiting Zion National Park. Always make sure to check the official website for updated road conditions as you plan your trip. In winter, this area of the park can be very icy. #ZionRocks #ZionGeology