"When Blair and Copper came, we cut out the animal in a block of ice, as you see, wrapped it and loaded it on the tractor for return here. We wanted to get into that ship.

"We reached the side and found the metal was something we didn't know. Our beryllium-bronze, non-magnetic tools wouldn't touch it. Barclay had some tool-steel on the tractor, and that wouldn't scratch it either. We made reasonable tests—even tried some acid from the batteries with no results.

"They must have had a passivating process to make magnesium metal resist acid that way, and the alloy must have been at least ninety-five percent magnesium. But we had no way of guessing that, so when we spotted the barely opened lock door, we cut around it. There was clear, hard ice inside the lock, where we couldn't reach it. Through the little crack we could look in and see that only metal and tools were in there, so we decided to loosen the ice with a bomb.

"We had decanite bombs and thermite. Thermite is the ice-softener; decanite might have shattered valuable things, where the thermite's heat would just loosen the ice. Dr. Copper, Norris and I placed a twenty-five-pound thermite bomb, wired it, and took the connector up the tunnel to the surface, where Blair had the steam tractor waiting. A hundred yards the other side of that granite wall we set off the thermite bomb.

"The magnesium metal of the ship caught of course. The glow of the bomb flared and died, then it began to flare again. We ran back to the tractor, and gradually the glare built up. From where we were we could see the whole ice-field illuminated from beneath with an unbearable light; the ship's shadow was a great, dark cone reaching off toward the north, where the twilight was just about gone. For a moment it lasted, and we counted three other shadow-things that might have been other—passengers—frozen there. Then the ice was crashing down and against the ship.

Chapter 1