For a long time it was warm on the wooded hills, but after a while it began to grow cold.
The ground was covered with snow and ice.
Cold winds swept over the wooded hills.
Snow beat into the rude brush huts, and cold winds whistled through the branches.
People shivered with the winter’s cold.
They needed a warmer shelter, but they did not know how to make one.
Many of them had been in caves, but they did not dare stay very long.
A cave-bear