This map was being developed from 2012-2013 by Curious McNugget, who intended it to build upon his most popular map, 67thway.

Development stopped on this map around 2013.
The only known release of the map was a test run on Questionable Ethics TTT around late 2014-2015.

Nugget had lost all files on the map, but the BSP was found 16/07/22.

These screenshots are taken from his Steam profile.
Nugget also discussed the map in detail in his AMAs on r/TTT and r/gmod (see below).

Links:
https://www.reddit.com/r/TTT/comments/ve2u4/i_am_the_creator_of_67thway_ama/
https://www.reddit.com/r/gmod/comments/vef12/i_am_the_creator_of_ttt_67thway_ama_xpost_from/