It was coming from the cave.
Then she called Strongarm.
He quickly roused the people, and they hurried out of the cave.
A moment more and it would have been too late.
The water rushed up from the dark narrow passage and out through the mouth of the cave.
There was water everywhere.
The frightened Cave-men ran for the hills.
They climbed trees, where they stayed through the long dark night.
When the rays of the sun streaked the sky in the east, the Cave-men were still up in the trees.
They looked out over the valley, but they scarcely knew the place.