You lift your legs over the side of the chute and ease yourself inside until you're positioned at the top like a slide. As you take your weight off the door to the hatch, it automatically slams shut behind you, shoving you forward. You lean backwards against the chute as you slide rapidly through the darkness. The texture of the metal changes from smooth to bumpy and slows you before abruptly ending, dropping you onto a soft surface you sink into upon impact. After a minute you get up, still totally surrounded by blackness. You can't even see your hand in front of your face. You can use your flashlight, use your whistle, or try finding your way around in the darkness.