Book details
Sunset of the Sabertooth
The Magic Tree House, 1996 by Mary Osborne
on Goodreads (13,696)
Description
Jack and Annie are whisked back in time to the Ice Age where they encounter Cro-Magnons, cave bears, sabertooth tigers, and woolly mammoths. Will they make it back to the treehouse, or will they be trapped in the Ice Age forever?