Salt deposits and moisture threaten to destroy the Mohenjo-Daro excavation in Pakistan, the site of a civilization that flourished at teh same time as the civilization in the Nile Delta and teh river valleys of the Tigris and Euphrates.
这个句子里，that定语从句修饰A of B中的B。
Written in ink or engraved by stylus, more than 2,000 letters and documents on wooden tablets excavated at the site of the old Roman fort at Vindolanda in northern England are yielding a historic account of the military garrison in the first and second centuries taht is as vivid in its details of personal life as that gathered from Pompeii.
