Flight over Pluto's satellite

NASA spacecraft New Horizons flied at 12,500 km by double system Pluto - Charon on July 14 2015 and collected about 50 gigabits of information. Due to narrow bandwidth, it relayed all info only in the December, 2016.

Charon has a diameter 1212 kilometers and acceleration gravity on its surface is 50 times less then on Earth - 0.278 m/c**2. 

This is simulated Charon flyover, made from NH images. Canyons and rifts up to 5 km depth, craters, plains. On the 34th sec of the video (right edge) one can see strange peak, growing  from the trough - it may be live cryovolcano. Its still unofficial name - Kubrick Mountain

Near the Charon's North Pole there is dark region, about 470 km in diameter. Its name is Mordor Macula. Strange, but there is no trace of Sauron's castle