9 "Hurry!" you yell. A moment later you see Dr. Sneed's reassuring
       face on one side of the opening above you. Larsen peers over the other
       side. "Don't worry," he calls. "Hey, what's..." Dr. Sneed's voice is
       cut off as he slides over the icy lip of the crevasse. You watch with
       horror as his body hurtles by, down into the abyss! You yell at Larsen
       to get back from the edge. But a blur whirls by, and you feel the rush
       of air as his body plummets after Sneed's. They're both gone, and now
       you are alone, trapped on a narrow icy ledge. If only you had warned
       them, you would have saved them and probably yourself too. Now your
       chances look slim. A search helicopter might fly over. But will it
       land? Will anyone ever find you down here? Will you even survive the
       arctic night?
       
 (DIR) continue