July 7, 2018 at 6:02 PM

Looking north across the eastern edge of the Great Sand Dunes towards the Sangre de Cristo Mountains. Mount Herard can be seen at far right, and Cleveland Peak in the distance near center.

July 7, 2018 at 6:15 PM

Looking north across the eastern edge of the Great Sand Dunes towards the Sangre de Cristo Mountains. Mount Herard can be seen at right.

July 7, 2018 at 6:26 PM

A panorama from north to east across the eastern edge of the Great Sand Dunes towards the Sangre de Cristo Mountains. Mount Herard can be seen left of center, with Mount Zwischen visible near center.

(You’ll probably need to download the full-sized image by clicking on the image icon next to the date to see all of the features.)

July 7, 2018 at 6:26 PM

Looking north across the eastern edge of the Great Sand Dunes. The Sangre de Cristo Mountains are just visible at far right.

July 7, 2018 at 6:27 PM

A panorama from west to north across the eastern edge of the Great Sand Dunes. Mount Herard can be seen in the background at right. A group of sandboarders can be seen just left of center.

(You’ll probably need to download the full-sized image by clicking on the image icon next to the date to see all of the features.)

July 7, 2018 at 6:27 PM

Looking west towards the eastern edge of the Great Sand Dunes. A group of sandboarders can be seen at far-left, while two backpackers approach in the distance at right.

July 7, 2018 at 6:32 PM

Looking east towards the Sangre de Cristo Mountains from the eastern edge of the Great Sand Dunes. Mount Zwischen can be seen in the distance at center-left.

July 7, 2018 at 6:36 PM

A seedling growing near the eastern edge of the Great Sand Dunes. Mount Herard can be seen in the distance at left, and Mount Zwischen in the distance at far-right.

July 7, 2018 at 6:49 PM

Looking south towards the Sangre de Cristo Mountains from the eastern edge of the Great Sand Dunes.

July 7, 2018 at 6:50 PM

Looking north across the eastern edge of the Great Sand Dunes towards the Sangre de Cristo Mountains. Mount Herard can be seen at center, and Cleveland Peak in the distance near center-left.

July 7, 2018 at 6:51 PM

Looking west towards the eastern edge of the Great Sand Dunes.

July 8, 2018 at 6:23 AM

A spider eats a moth inside Len and my tent.

July 8, 2018 at 6:53 AM

The eastern edge of the Great Sand Dunes at sunrise. Mount Herard can be seen in the background at right; Len and my shadows are visible at left.

(You’ll probably need to download the full-sized image by clicking on the image icon next to the date to see all of the features.)

July 8, 2018 at 6:54 AM

The eastern edge of the Great Sand Dunes at sunrise.

July 8, 2018 at 7:04 AM

Len at the Great Sand Dunes.

July 8, 2018 at 7:04 AM

Looking north across the eastern edge of the Great Sand Dunes. Mount Herard is just visible at far right.

July 8, 2018 at 7:10 AM

Looking north across the Great Sand Dunes towards Mount Herard.

July 8, 2018 at 7:22 AM

Looking south across the Great Sand Dunes towards the Sangre de Cristo Mountains.

July 8, 2018 at 7:22 AM

Looking southwest across the Great Sand Dunes. The Sangre de Cristo Mountains are visible at left.

July 8, 2018 at 7:23 AM

Len and my shadows on the Great Sand Dunes.

July 8, 2018 at 7:24 AM

Looking west across the Great Sand Dunes.

July 8, 2018 at 7:24 AM

Looking south across the Great Sand Dunes towards the Sangre de Cristo Mountains. Len can be seen ahead of me on the dune ridge at far left.

July 8, 2018 at 7:25 AM

Looking north across the Great Sand Dunes.

July 8, 2018 at 7:26 AM

A panorama from east to south across the Great Sand Dunes towards the Sangre de Cristo Mountains.

(You’ll probably need to download the full-sized image by clicking on the image icon next to the date to see all of the features.)

July 8, 2018 at 7:26 AM

Looking south across the Great Sand Dunes towards the Sangre de Cristo Mountains. Len can be seen ahead of me on the dune ridge near the center of the frame.

July 8, 2018 at 7:27 AM

A panorama from west to north across the Great Sand Dunes. Mount Herard can be seen in the distance at far right.

(You’ll probably need to download the full-sized image by clicking on the image icon next to the date to see all of the features.)

July 8, 2018 at 7:28 AM

Looking southwest across the Great Sand Dunes. The Sangre de Cristo Mountains are visible at left.

July 8, 2018 at 7:35 AM

Len at the Great Sand Dunes. The Sangre de Cristo Mountains lie in the distance.