Hint would be appreciated (Echoes of the Eye SPOILERS)

Hello, ive been stuck on the last lock (the one with the 2 alarms and the light coming down at you)

Any hint towards what to do?

I tried:

1. Looking for the rapture where the light is coming from, failed
2. Going as fast as possible, still no clue

And some other things I cant quite remember

I dont want the full on answer please, id love just a hint