[caption id="attachment_327" align="alignleft" width="300"] Looking across the Silurian Valley. The Avawatz Mountains and Salt Creek as viewed from the recently denied solar project site.[/caption] The Silurian Valley, a vast expanse of creosote scrub and sand dunes surrounded by rugged mountain ranges, has become a flashpoint in the debate about utility-scale solar in the California desert. Spanish energy giant Iberdrola proposed a...