"Now how the hell did that happen...."
He circled lower. It was a ball of solid ice. He could see all the way through it. It was about six feet in diameter, smooth as glass. It was perfectly round, like a huge green bubble. It lay there on the snow, sparkling in the dull light. "Funny ice formation—"
Then the ball moved.
Watching, Steel almost rammed a building. He pulled up, staring at the thing. The ball rose slowly, ten feet above the snow. Suspended by nothing. Then it drifted slowly over the wastes, aimlessly, like a bubble in the breeze.
Steel followed it, amazed. A strong air current? But it wasn't affecting the plane. Besides, that chunk of ice probably weighed half a ton!
The thing finally came to rest against an ice crag near one of the wrecked buildings. Steel went in close and hovered, examining it with bewildered eyes. And it was just a ball of ice. That's all it was.
Well, lots of queer things happened on the glacier.... Shaking his head, he started to zoom away.
Then it happened.
More of the ice balls! Hundreds of them! Curving down upon him from above!
Colorless, unseen until they were upon him, they blocked the plane on every side.