http://jalibrary.i2p/meta?fname=archives/books/epubs/Douglas%20Preston/Thunderhead%20%28877696%29/Thunderhead%20-%20Douglas%20Preston.epub
In it her father, long believed dead, hints at a fantastic discovery that will make him famous and rich---the lost city of an ancient civilization that suddenly vanished a thousand years ago. Now Nora is leading an expedition into a harsh, remote corner of Utah's canyon country. Searching for her father and his glory, Nora begins t unravel the greatest riddle of American archeology.