We had a pipe in the ground break. My plan is to go through the wall and bypass the broken pipe which goes through the foundation. We have an AAV. Any thoughts on why this pipe appears to go up and down? I was expecting it to go down into the drain line through the wall but there's no upstairs so I'm not sure why this would go up at all? I'm hoping to drill through the wall from the outside and just connect into the line if that makes sense.