ENGINEERED BY NATURE CAVE OF CRYSTALS BY MARTHA LONDON CONTENT CONSULTANT ERIC FRITZ GEM AND MINERAL MUSEUM MANAGER UNIVERSITY OF ARIZONA Kids Core An Imprint of Abdo Publishing abdobooks.com
The crystals look huge next to humans
CHAPTER 1 CRYSTAL TOWERS Scientists step into the Cave of Crystals Huge columns of white crystals surround the scientists Some crystals are 36 feet 11 m tall The columns are as thick as tree trunks Scientists estimate the largest crystals weigh more than 60 tons 55 metric tons
