The first den1 hint left
This chamber features the game's first 'hidden den', which gave me some real heebie-jeebies when I first played this game as a teenager.
You can find the den near the two turrets facing each other and get inside by moving the cubes.
Guide help
This is the low-spoiler guide for "The first den" puzzle in Portal. Unlike in normal walkthrough, you get gradual hints on how to solve the puzzle. Click the big button below to see your first hint. If the hint contains a spoiler, you will be warned about it before clicking.
Hints written by Kieron West
Kieron West
Hi! I have written video game guides since 2018. Any money I make here will go towards improving my equipment so I can make the things you enjoy even better (and faster!)