Jan 13th a walk in the woods part 2

I went on a short walk in the woods yesterday and decided to take another short walk to see more of the woods.

Here are some shots all from my Nikon D5300. If you saw yesterday's shots of the water drain tunnels, this is from on top of them looking down where I came from. 

This one is on top of the drain pipes.  It too is a water flow set up.  The parking lot from the apartments behind the fence seen here drains on top of the pipes as this is all cement. 

Over on the left of the shot above I found a path so I followed it and found this.

  .

I just had to go down there and take a few shots.

Once I got back up on top I traveled further to see where the kids were going and found these next few shots.

So the kids use this as a path (shortcut) to the street.  The shots below are opposite of the one towards the road and there is a path next to the creek barely visible in this shot so I took the path.  

After following the path I found this.  I wonder what this is as the water inside of the "pipe" looks almost like sewage but the creek is the water you see around it. 

Barely viewable is the water drain way my neighbor has put in about 30 years ago.