A colony of upside-down bats shrieked from cracks and crevices, but the determined adolescent continued her heart-pounding descent into the depths of the earth to discover her great-great-grandfather's trove of hidden belongings. No sooner had she found the official certificate of land ownership and tore it in half to ask the ghost, "Are we cool?" than the dynamite exploded. The air was thick with smoke and dust. Arcelia felt a big splinter from a plank that had stuck into her arm. She bravely pulled it out.

"What did you like best about your vacation at Wow's? My favorite thing was not getting trapped forever in an old mineshaft!" the eleven-year-old said to herself. Arcelia felt water droplets patter on her forehead. Then the girl heard the whispering of percolating water and followed it through a dark labyrinth of passages.