The New Horizons science team is starting to release some of the imagery returned post-flyby. There are processed Science Gallery images, as well as a new dump of raw(er) LORRI images.
The money shot for me is a gigantic mosaic of the highest-rez images (spherical mosaic). I won’t reproduce it here because it’s a monitor-buster, but ya gotta. You just gotta.
Here’s one of the raw images making up the big mosaic:
The big mosaic shows this as the margin (damn I want to say “shore”) of a huge patch of white…can I say “frozen lake”? I think I can because of the polygonal cracks. That there is a solid sign of convection, as I understand things. Some fluid flowed underneath that solid surface at some time in the fairly recent past. That’s really cool. But not absolute zero cool.
Enjoy.