Oprada Tunnels
The Oprada Tunnels are a network of tunnels underneath Oprada. They are the result of ancient mines, with the resource that was mined long since been used up. The lowest point that has been visited within the last 100 years is said to be 50 meters below sea level.
It can be classified into many sections, with the top layer of tunnels functioning as a sewer for the city, having been reinforced by the work of the Oprada Masonry Guild, and kept in check by the Oprada Sewer Authority. Further down some of the tunnels, with permission of the city diet, are used as private ossuarys and crypts for the wealthier citizens of Oprada. The network is also used by groups such as the Oprada Thieves Guild to get around the city without being seen, with them having dug several entrances into the sewer layer (unbeknowst to the city guard).
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