https://youtu.be/AeUQnmOiMX0 - my video on drainstation
I had a problem uploading the photos - Flickr was saying they are invalid but when I uploaded them as screenshots they worked fine.
1. The first section is very low and also has many things hanging down from the roof which makes you have to go even lower.

2. After about 100m, you get to the horseshoe section. This reminds me of the start of Swoo which happens to be nearby to this.

3. For reference, this is the first section of Swoo

4. Soon after the horseshoe section ends, you get to a RCP that takes you to the main part of the drain, the station chamber.

5. It also includes some train tracks

6. Not only is this the only main feature, theres then another large room right next to the station chamber that leads into the very large pipe.

7. One of the other rooms

Some of the photos didn't turn out great but the explore definitely was great. 9/10.