Duhn Darim was, centuries ago, simply an Orc winter camp along the edge of Lake Mornburh. The Mornburh clan would migrate during the warmer months, and once food was scarce they would return to Duhn Darim to wait out the harshest parts of the winter in the communal longhouse they had built as shelter. Should game have been scarce enough leading up to the winter, or the winter being especially rough, the Mornburh Orcs would venture out onto the frozen lake and fish under the ice.
When the Rima govenrment offered to turn Duhn Darim into a proper city, Orc Chieftan Naggord accepted, on one condition. The city had to fit into the surrounding land, and still alow his people room to grow. Taking this as a special challenge, the Dwarves built one of the most unique Orc cities in the whole of Rima.
From only a hundred yards away, Duhn Darim looks like a very small settlement, with a handful of buildings and a dock on the edge of the lake. There are no gates, or walls, and if you were passing by, you wouldn't think twice about this tiny villiage. It's only once you enter the city you see the brilliance of the Dwarves who built it.
Just beyond the few "surface" buildings at the edge of the city is a great cylindrical hole, with the main road leading into it, and spiraling downward along the edge of the cylinder. At each level, impossibly delicate looking stone and metal roads criss cross across the open hole. Along the wall are buildings, and alley entrances to truely underground levels of the city.
The metal roads flying across the open space are terrifying for new people to experience. They look like they would be on the verge of collapse, but like all things Orcish, there are as solid as the ground. It is not an uncommon sight to see an Orc casually leap over the edge of one, fall a level or two, and catch themselves and land right where they wanted to be.