Aperture Science - Portal Wiki
Let's Play Portal 2 E16 Salt mines, death water, and Cave Johnson - YouTube
Portal 2 Episode 5 - This Is A Salt Mine? IN MICHIGAN?! - YouTube
The best Portal 2 mods | Rock Paper Shotgun
Portal 2 Walkthrough: Chapter 6 (The Fall): Old Aperture Science Foyer (Let's Play, 1080p HD) - YouTube
Aperture: Salt Mines on Steam
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
Aperture: Salt Mines Portal Gun - (Link in comments!) : r/Portal
Portal 2 Chapter 6: The Fall Walkthrough / Tower Condemned Testing Area Potato GLaDOS Blue Gel Vitrified Borealis Repulsion (PC PS3 XBOX360 MAC)
Test Shaft 09 - Combine OverWiki, the original Half-Life wiki and Portal wiki
Portal 2: Valhalla — Portal 2: Valhalla
Test Shaft 09 | Half-Life Wiki | Fandom
Aperture: Salt Mines on Steam
TIL Portal takes place in Michigan : r/Portal
This explains how in the hell is Aperture so deep : r/HalfLife
Underground (Portal 2) - Valve Developer Community
Ambiance - Old Aperture Ambiance #001 (Portal 2) - YouTube
Testing track | Half-Life Wiki | Fandom
Sparks image - Desolation mod for Portal 2 - Mod DB
Thinking on rails: why Portal 2 isn't as good as the original | Ars Technica
Aperture: Salt Mines on Steam
Aperture Science Enrichment Center | Half-Life Wiki | Fandom
Destiny 2' Thorn Quest Guide - How to Start, Salt Mines & Step Walkthrough
Steam Community :: Screenshot :: A drydock in an Iowa Salt Mine? Only at Aperture Science.
