Kala'uun is a large subterranean city on Ryloth, within the Lonely Five mountain range. Like all cities on Ryloth, it is located along the twilight terminator separating day from night. It had a large spaceport that was the center of interplanetary commerce for the Twi'leks. To protect it from heat storms and the native lylek, a massive portcullis blocks the only accessible underground tunnel to the city.
