Neraka was once an ordinary town. However, once Takhisis chose Neraka as the headquarters for her war upon the people of Ansalon, all manner of evil creatures flocked to the city, turning into a squalid den of evil. As the dragonarmies moved in, most of the townspeople fled or disappeared. Now, only the bravest or most destitute of Neraka's citizens remain.
The dark city is populated with dark pilgrims who have come to pray at the evil Temple of Takhisis and fresh dragonarmy recruits who are eager to pick a fight. It is probably best to avoid this dangerous place.