AR Book Level
5.5
AR Points
7
Word Count
44,538
Interest Level
Middle Grades (MG 4-8)
Genre
Fiction
AR Quiz #
315677 EN
About this book
In the Mexican jungle a scientific team prepares to embark on an exploration of the world's deepest sinkhole; a naturally-formed underwater shaft that no one has ever reached the bottom of. What they are about to discover could change the world forever.