Mystery of the Mayan temple

"This is a Code Reader title, which decodes difficult words and makes the text easier to read. A family is visiting a 1,000-year-old Mayan (MY-un) temple. They step on a trap door and slide deep into the temple. Now, it is up to a 10-year-old boy to find them and help them escape. But what happens when he makes an amazing discovery along the way?"--