Great Sand Dunes National Park in south central Colorado is home to the highest dunes in North America. A series of unique geologic topology and weather patterns provided the conditions for creating these dunes, the largest of which is over 700 ft. Climbing these dunes can be a difficult task as there is no straight path to the top with the easiest path over the ridges of the smaller dunes. Additionally, each step was only about a half step as quite often I found myself sinking back a bit. Luckily, on this trip I had some rain the night before which made the sand a bit firmer and easier to navigate. This shot of Carbonate Mountain, part of the Sangre de Cristo range, was taken from close to the top of High Dune which rises 650 ft. from the base of the park.