Portal 2 Chapter 6: The Fall Walkthrough / Tower Condemned Testing Area Potato GLaDOS Blue Gel Vitrified Borealis Repulsion (PC PS3 XBOX360 MAC)
Aperture Science - Portal Wiki
Test Shaft 09 - Combine OverWiki, the original Half-Life wiki and Portal wiki
Aperture: Salt Mines Portal Gun - (Link in comments!) : r/Portal
TIL Portal takes place in Michigan : r/Portal
Test Shaft 09 | Half-Life Wiki | Fandom
Portal 2 Chapter 6: The Fall Walkthrough / Tower Condemned Testing Area Potato GLaDOS Blue Gel Vitrified Borealis Repulsion (PC PS3 XBOX360 MAC)
Aperture: Salt Mines on Steam
Steam Community :: Screenshot :: A drydock in an Iowa Salt Mine? Only at Aperture Science.
Underground (Portal 2) - Valve Developer Community
Let's Play Portal 2 E16 Salt mines, death water, and Cave Johnson - YouTube
ModDB no Twitter: "Desolation is a mod for Portal 2 that tells a new story set after the events of the main game, when Aperture Science is abandoned https://t.co/STXa0Wyn22 @desolation_mod https://t.co/MxFbMf5LAO" /
Aperture Science Origins | The Infinite Zenith
Portal 2: Valhalla — Portal 2: Valhalla
Aperture: Salt Mines on Steam
Test Shaft 09 - Combine OverWiki, the original Half-Life wiki and Portal wiki
After seeing that image of the positively massive salt mine on the front page, thought I would crack open MS Paint to try and make it more portal-y : r/Portal
Portal 2 Walkthrough: Chapter 6 (The Fall): Old Aperture Science Foyer (Let's Play, 1080p HD) - YouTube
The Save Room Mini Bar — Portal 2. Aperture: Science Innovators. Testing...
The best Portal 2 mods | Rock Paper Shotgun
Chamber 5 - Chapter 7 - The Reunion - Single Player Walkthrough | Portal 2 | Gamer Guides®
This explains how in the hell is Aperture so deep : r/HalfLife
Thinking on rails: why Portal 2 isn't as good as the original | Ars Technica
