Titan is Saturn's largest moon and is the only natural satellite known to have a dense atmosphere. Titan is also the only other object besides Earth with clear evidence of stable bodies of surface liquid. Titan is actually composed of water ice and rocky material.
Titan has been described as geographically young, and it has many different types of geographical features. Interestingly, each group of features is named after a different works of fantasy. For example, craters are named after deities of wisdom, labrynthi are named after planets in Dune. By far one of the largest groups of named features are mountains which are named after mountains in JRR Tolkien's middle earth. For example, you can find the Misty Mountains, Mount Doom and even Mount Erebor which was featured in 2012's The Hobbit.
Check out the source for more names and information on Titan.