In the August 2004 issue of Play magazine, 4 months before Half-Life 2 was released, a pretty interesting screenshot was published. It is interesting because the area it depicts didn't make it into the final game. It also possible that it survived, but in a very different form.
On the screenshot taken on one of the last maps of the Canals area of the game, you can see two metrocops standing on a shrimp boat. Ravenholm can be seen on the 3d skybox at the distance, and on the right from the boat there is one of the tunnel's portals.
Do you have any thoughts what this place could be? You can write your opinion in the comment section.
We thank
Vadim M for the provided magazine scans.