Yoto says: Sabertooth tigers and woolly mammoths, oh my! The seventh story in The Magic Treehouse Series.

Jack and Annie are whisked all the way back to the Ice Age in this compelling Magic Tree House time-travel adventure, in which they meet woolly mammoths, cave people...and fierce sabertooth tigers!\n\nIt's about time: don't miss any of Jack and Annie's adventures in the Magic Tree House series."}">Jack and Annie are whisked all the way back to the Ice Age in this compelling Magic Tree House time-travel adventure, in which they meet woolly mammoths, cave people...and fierce sabertooth tigers!

It's about time: don't miss any of Jack and Annie's adventures in the Magic Tree House series.