Missile Game

Every tunnel has its beginning and its end, doesnt it? Some might be longer than others, but there is always an end... But what if all these assumptions are based on wrong beliefs? What if there is no end at all? Is it a tunnel then? Or what is it? Here is the missile that is able to explore the very depths of every tunnel in this world. Guide the missile down the tunnel and find out what is on its end! Have fun.