The ravine is deep, and green most of the year, with a stream flowing through it. It winds through the residential areas of Burnaby, British Columbia. While lush and green are fooling you. Like so many of these small “natural” walkways through the city underneath is its real purpose. There is both a sewage and a high-pressure gas line. The walkway has scattered warnings about its true dangerous nature. On a quiet day, you can stand still and hear the gas flowing, and the sludge. It’s rather disheartening.