Since the beginning, the Beta community always believed there were 7 maps in the old version of the City 17 chapter from early 2001: 6 maps with the "c17_" prefix and "subt" (later known as d1_steam_01). However, recent evidence has come to light that indicates that there were not only 7 maps, but 9!
Bun, aka bw1119, has
found some very interesting details in the arcade05.vmf file found in the WC Map Pack. In this vmf, the radio tower building leads to an air duct with a "trigger_changelevel" inside of it, which leads to a c17_07 map.
We only knew of the existence of the c17_06 map, which isn't in the WC Map Pack, from a trigger_changelevel on an older Manhack Arcade VMF - c17_05.
Another interesting thing about that older version of the radio tower is that the entrance to the underground area is hidden behind a bookshelf, which the player was supposed push in order to proceed. In addition to this, the light on the stairs was out and we were to manually turn it on. You can watch both of these of these events below:
Another interesting thing is the name of a map - subt_1, which gives us a clue there could also be subt_2. And since we are talking about an older version of the subt maps, we can show you what's left of it on the original subt.vmf from the WC mappack in the hidden vis groups:
And if all of a sudden you wish to try and restore the older versions of these maps, we
prepared a vmf for you, with all the known parts of them in it.