"Yes, I guess so," agreed Freddie. "I wonder where we are anyhow, Flossie?"
"Why, in a big hole," she said. "Oh, Freddie!" she suddenly cried, "maybe we can get out the other way if we can't climb up."
"Which other way?" asked her brother.
"Out there," and in the light that came down the hole through which the twins had fallen Freddie could see his sister pointing to what seemed another dim light, far away at the end of the big hole. For Flossie and Freddie had fallen into a big hole—there was no doubt of that. Though it was pretty dark all about them, there was enough light for them to see that they were in a cavern.
"Maybe it's a cave, like the one we went into from the lake when we found the boat," said Flossie, after thinking it over a bit, "and if we can't get out one end we can the other."
"Maybe!" cried Freddie eagerly. "Anyway, we can't get up that hill of sand," and he pointed to the one down which they had slid. "Come on, we'll walk toward the other light."
Far away, through what seemed a long lane of blackness, there was a dim light, like some big star, and toward this, hoping it would lead to a hole through which they could get out, the children walked.
As they neared it the light grew brighter, and they were beginning to feel that their troubles were over when suddenly they both came to a stop.
For, at the same time, they had heard a queer noise. It came from the darkness just ahead of them and was such a funny sound that Flossie put both her arms around Freddie, not so much to take care of him as that she wanted him to take care of her.
"Did—did you hear that?" she whispered.