http://www.nasa.gov/sites/default/files/thumbnails/image/cro... (8000x8000, 67.5 Mb)
You can totally see the atmosphere in the top right horizon.
A lot of the big crags throughout the planet look to me like they have to be formed by flowing liquid.
You can very clearly see (12!) layers of the atmosphere in this photo:
https://www.nasa.gov/feature/pluto-wows-in-spectacular-new-b...
http://www.nasa.gov/sites/default/files/thumbnails/image/cro... (8000x8000, 67.5 Mb)