Your head aches. You feel as if you've been run over by a steamroller . . . but a cool hand is pressed against your forehead.
"Don't worry, you're going to be OK," Dr. Vivaldi says. "The radio worked. Help is on the way."
Your face is bruised. It's painful just opening your eyes, but well worth it. For in the bright sunlight you can see ice fields all around you. You're back in Greenland, and right now the whole surface of the earth feels like home!
You look up at Dr. Vivaldi. Her face shows she, too, is in pain. "A broken arm," she explains. "Otherwise, I'm OK."
"We were lucky," you say.
"Yes." She smiles. "The Vertacraft Just squeaked through. The crevasse has narrowed two more feet. In another few weeks it will be impossible to get through. You and I will probably be the last ones ever to visit the Underground Kingdom."
"I'm glad we had the chance," you say. "I wouldn't have missed it for the world."