You can see the river in the picture here,
which was taken in September 2012 by the Cassini spacecraft
orbiting Saturn. The image is so long I decided, what the heck,
I’ll let it run down the side of this entire article. The river appears
dark against the lighter background of Titan’s surface.
While this isn’t the first river network seen on Titan, it’s the longest,
and this is the highest-resolution image ever made of one.
Check out the full article and blog here.