I have a metal pipe that is capped showing on the outside of my house under my deck (brown, painted pipe, facing up in center of attached picture on the top). My basement is finished so I am unable to follow the pipe to its source from the inside of house. I am guessing it is a natural gas connection. Does anyone know what this pipe is? What would you use it for (if gas, future natural gas grill, fire pit, etc.)? Would you try to use the connection? Please excuse my ignorance.