Nar Shaddaa was the largest moon of Nal Hutta. More commonly known as the Vertical City, the Smugglers’ Moon and Little Coruscant, Nar Shaddaa was similar to Coruscant in that its surface was entirely overgrown with city sprawl for millennia. But unlike Coruscant—which was only relatively rundown and dangerous on the lower and under levels of the world city—Nar Shaddaa was filthy, polluted, and infested with crime everywhere.
Ancient refueling spires and loading docks reached out from the native soil and some built in the upper atmosphere. In between these ports, massive vertical cities grew. The urban areas on Nar Shaddaa were known as vertical cities since new layers of housing and entertainment buildings were built on top of older layers, like Coruscant and Taris.
While much of Coruscant was filled with gleaming apartments and well-maintained skywalks, the entire moon that was Nar Shaddaa was dominated by decaying urban landscape and congested, polluted cities. The moon was protected by planetary shields. Anything illegal elsewhere could be bought and sold on Nar Shaddaa, and many young smugglers, pirates and criminals started their careers on the Smugglers’ Moon. Various sections of Nar Shaddaa were controlled by the Hutts and other criminal organizations.
Despite the criminal activities on the Smugglers’ Moon, it was known that many of the galaxy’s most advanced technologies were actually developed on Nar Shaddaa. Corporations that wanted to avoid regulations that prohibited testing often developed such dangerous and even valuable technology within the lower levels of the city of the moon.