Portal 2 Underground lighting error


So, basically the entirety of the portal 2 underground area has a fully lit ground, floor, and ceiling, and just has general lighting errors everywhere
Here is a picture:

No I don’t have mat_fullbright 1 enabled


Valve are human.
Valve makes error.
Valves makes mapping (in Hammer) errors.
Also I am convinced that some of the most prestigious talented Hammer fanbase are more skillful than Valve itself.
So yes it’s an error, and yes that sometimes happen.


I was just wondering if it was an error with my computer that could be fixed. Thanks :slight_smile: