The main road continues into the mountains and ends at KÅ keÊ»e State Park. The second-largest canyon in the US lies in the heart of the Texas Panhandle. Palo Duro Canyon is 25–40 miles long ...

USA TODAY rounded up answers to the most popular park questions to help travelers better understand these national treasures and share some fun trivia with family and friends on their next park visit.

As the second-largest canyon in the United States, stretching approximately 120 miles long and 20 miles wide, this Texas treasure offers awe-inspiring views, diverse ecosystems and a peaceful retreat.