Aridia

Aridia is the planet known for housing Outpost X11 and Outpost X12.

Ratchet & Clank
Once Ratchet and Clank receive an Infobot containing the coordinates to Skidd McMarxx crash site on Aridia, they head for Outpost X11. There they found Skidd cut off from the ship by Sandsharks the inhabit the planet. Despite Clank's protests that they needed to find Captain Qwark, Ratchet was enticed by Skidd's offer of one of his hoverboards as payment for helping him, and cleared the way. Skidd gave Ratchet a Z3000 Deluxe Hoverboard for his troubles before the two parted ways.

After clearing out the Sandsharks for Skidd, Ratchet and Clank went looking for Skidd's agent. They traversed Outpost X11 itself and found Skidd's agent on the other side. Skidd's agent told Ratchet that since he could not get into contact with Skidd that Ratchet could be his new client if he brought back the championship prize from Blackwater City on Rilgar. With a gleam in his eye, Ratchet left the agent, excited to participate in the races on Rilgar.

When Ratchet obtained the Swingshot from planet Kerwan he was able to explore a new area of the outpost. At the end of the newly accessible section, Ratchet found a Trespasser, which allowed Ratchet to hack doors sealed with Versa-Locks.

Ratchet brought back the championship prize to Skidd's Agent and as a signing bonus Ratchet was rewarded with a Sonic Summoner. The Sonic Summoner allowed Ratchet to summon Sand Mice from around the galaxy to assist him in battle.

Appearance
From orbit Aridia is a reddish-brown color with noticeable rifts viewable in the original game. In UYA the planet appears to be very different, with a large brown landmass close to the equator with a bluish material closer to the poles that appears too dark to be water.

Outpost X11 features a still-in-construction outpost as well as a rocky outcropping that houses Sandsharks. The area itself is very sandy, featuring many muddy sinkholes. What appear to be freight ships can be seen zipping around the planet's skies and two unnamed celestial bodies are very clear in the planet's night sky. A large anit-aircraft gun is also easily seen from anywhere on the map.