Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
3.6
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
496
Points per Word
0.001008
Page Count
32
Points per Page
0.015625
Description
Readers will uncover cities around the world that have been built underground. Showing where these cities are hiding, and the secrets they contain.