Help - dog kennel

[NeroAngelos]

The thing is that when i press the box the lights in the corridor are going off and i can hear the lights switching on and off in the other corridor but how do i get back to the first corridor when i made the one i came from dark?

Spoiler below!

Turn the lights back on, go down the corridor and there's a small room on your left with 2 big metal crates in it, drag them back down the corridor towards the light switch and use them to cover the holes in the walls