One of the biggest space stories of the summer was the images we saw of the dwarf planet Pluto, which was finally photographed from up-close by NASA's New Horizons spacecraft.

Those images are still rolling in, and as they make the long journey back to Earth, NASA has been releasing them to the public little by little. One such photograph, , showed clear details of the complexities of a mountain range known as theTartarus Dorsa. In the image below, the mountains resemble scales on a dragon.

A mountain range known as the Tartarus Dorsa is seen in this image taken on July 14, 2015 as NASA's New Horizons spacecraft photographed Pluto.

(NASA/JHUAPL/SwRI)

(MORE: )

Although the photos were taken by New Horizons in July, they were downlinked by NASA just days ago.

“It’s a unique and perplexing landscape stretching over hundreds of miles,” William McKinnon, New Horizons Geology, Geophysics and Imaging (GGI) team deputy lead from Washington University in St. Louis, told NASA. “It looks more like tree bark or dragon scales than geology. This’ll really take time to figure out; maybe it’s some combination of internal tectonic forces and ice sublimation driven by Pluto’s faint sunlight.”

Another image, also released Thursday, thanks to enhanced-color techniques. This gives scientists plenty to study with regards to the dwarf planet's geology, as you can see in the image below.

(NASA/JHUAPL/SwRI)

“With these just-downlinked images and maps, we’ve turned a new page in the study of Pluto beginning to reveal the planet at high resolution in both color and composition,” New Horizons Principal Investigator Alan Stern, of the Southwest Research Institute in Boulder, Colorado, told NASA. “I wish Pluto’s discoverer Clyde Tombaugh had lived to see this day.”

MORE ON WEATHER.COM: Images of Pluto

New Horizons scientists made this false-color image of Pluto using a technique called principal component analysis to highlight the many subtle color differences between Pluto's distinct regions. The image data were collected by the spacecraft’s Ralph/MVIC color camera on July 14 at 11:11 AM UTC, from a range of 22,000 miles (35,000 kilometers). (Credits:NASA/JHUAPL/SwRI)