The chamber22.zip file you have requested: Maps Levels Missions / Portal: Chamber 22 Map - 3.24mb is not available. Perhaps try browsing all files for the game Portal and upload any files you want to share or are missing. This is the only information we could locate:

Chamber22 ReadmeTo install unzip file and place map files into your folder namedSteam\SteamApps\username\portal\portal\mapsto play the map, run portal,go to bonse maps and click on chamber22. is this dose not work for some reson,open the deve This map is 100% playable all of the puzzles work. There however is a bug at the beginning of the advanced map if you try to jump in after the cube.

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