Build your child’s reading confidence at home with books at the right level In the Iron Age over 3,000 forts were built on top of hills.Find out how hill forts were constructed, what they were used for, and what they tells us about the people who lived over 2,000 years ago.A fascinating look into a past world by Juliet Kerrigan. Copper/Band 12 books provide more complex plots and longer chapters that develop reading stamina. This book has been quizzed for Accelerated Reader.