Flin Flon is the only city in the world to locate their sewage lines above the ground. This is necessary for some areas of the city because of the masses of near-impenetrable bedrock. Instead of burying the pipes, they are surrounded by a wooden casing and run above ground to create a unique snake-like appearance. Early settlers first built these above-ground sewer and water lines, becoming the settlement's first "sidewalks". They are still used regularly today as fully usable sidewalks.