When exploring Great Sand Dunes National Park and Preserve, hikers can wander freely through the vast 30-square-mile dunefield without any set trails. High-top boots and long pants are recommended to keep sand out of your shoes, especially in the scorching summer heat when the sand can reach up to 150F degrees. Popular destinations include the iconic High Dune on the first ridge, the remote Hidden Dune, and the majestic Star Dune, all offering stunning views of the unique landscape. For a break from the sandy terrain, forested trails like the Montville Nature Trail and Mosca Pass Trail provide shady respites, while alpine adventures await at Medano Lake and Mount Herard or Sand Creek Lakes for those seeking a more challenging trek.