afair co_Libye1_Day was made by Joel_FR
http://hd2clubfr.weebly.com/index.html
It’s a co-op mod based on the Libye1 death match map including the borders i.e. you can’t go beyond the big city wall.
Maybe it would work to use the scene2.bin, scene.4ds and tree.klz files from co_Libye1. The scene2.bin would need some adjustment for the spawns I guess.