This is an alley next to an abandoned warehouse and an old store, currently in use as an improvised algae grow farm.
There are electric lights shining from the mouth of the alley, piles of smelly trash half-blocking the way, rats, and a chain-link fence at the far end.
There is a fire in an old barrel, with two people warming themselves over it.
There is also an indistinct figure in a hoodie and gym shorts, holding a backpack close, sprinting down the alley towards him and fully willing to shove right past him if he doesn't get out of the way.