Any interesting or strange maps from the 2003 leak that hardly anyone knows of?

[Bruner]

There's gotta be some weird, obscure, and relatively unknown maps out of the 1300+ maps from the leak that not even hardcore beta fans are aware of. Could you share some of these maps?

[randomprecision]

In the Half-Life Source leak there's a few old versions of retail HL1 maps. I remember in the On a Rail chapter there was a very bulky looking train from the beta with very different textures around the map. I'm going to download the leak again and check it out