Toluf wonders about the dragons on Moonstone Mountain. Are they really up there? Toluf and his friend set out on a quest to find out! The Dragons of Moonstone Mountain is at Oxford Reading Level 11. It is for readers aged 7 to 11 years old who are working below expected standard in their reading. The Readerful Rise series ensures that older struggling readers have books with age-appropriate content and topics, that look like the books their peers are enjoying, but are written at a level they can read successfully.