From the Publisher Blurb:
Kiraz is an abandoned underground city built by the first Khuzdul inhabitants of Hârn some 7,000 years ago. The city is located on the northern fringe of the central Rayesha Mountains, a majestic range of high peaks that sweep in a great arc north of Lake Benath. The surrounding wilderness area is inhabited by Equani tribesmen and numerous gargun.
Kiraz is of great significance to the Hârnic Khuzdul, not only as the symbolic birthplace of their kind, but for the tragedy that befell its inhabitants. Known as the Carnage of Kiraz, this event colors the Khuzan personality to this day.
Kiraz describes underground city's history and settlement. It includes color GM and player maps of the city and brief descriptions of interesting locations. The article features color floor plans of the Royal Complex.