Derem City was once the planetary capital, until it was buried under three kilometers of water. However, this depth meant that Derem City was also the most accessible of the ruins that made up the former Kaminoan civilization, and modern Kaminoans often made pilgrimages to the ruins to contemplate their existence.
The city itself was well-conceived and laid-out, with glorious sunspires dotting the perimeter. These sunspires eventually formed the anchors for the Razoral Reefs. Exploration of the Derem City ruins uncovered a vast library that appeared to have been maintained by a group of Jedi Knights, as it contained a sea-crystal holocron that was later discovered to have been created by Qalsneek the Bull.