Don't Follow The Arrows! [seen in SOMA]
I don't know what evil troll or miniature Exorcist Alice is trying to get you to go down this little rabbit hole, but I'm here to tell you, "DON'T DO IT!" Green does not equal go in this equation.
I mean, it already looks like someone tried to poke a finger or a baby's arm down here already. Who would do such a thing? Clearly, you should be prepared to have whatever you stick down here bitten off.
My advice: Stay away, no poking, keep your hands inside the bus!
I'll try to keep you updated in case I see anything crawling inside--or out!