Sun Symbol Series by Scott Sigler

Deep below a desolate Utah mountain lies the largest platinum deposit ever discovered. A billion-dollar find, it waits for any company that can drill a world's record, three-mile-deep mine shaft. EarthCore is the company with the technology, the resources and the guts to go after the mother lode. Young executive Connell Kirkland is the company's driving force, pushing himself and those around him to uncover the massive treasure... moreDeep below a desolate Utah mountain lies the largest platinum deposit ever discovered. A billion-dollar find, it waits for any company that can drill a world's record, three-mile-deep mine shaft. EarthCore is the company with the technology, the resources and the guts to go after the mother lode. Young executive Connell Kirkland is the company's driving force, pushing himself and those around him to uncover the massive treasure.But at three miles below the surface, where the rocks are so hot they burn bare skin, something has been waiting for centuries. Waiting ...and guarding. Kirkland and EarthCore are about to find out first-hand why this treasure has never been unearthed. less

MOUNT FITZ ROY is the long-awaited sequel to the Audible & Amazon bestseller EARTHCORE. The cataclysm in Utah's Wah Wah mountain range left the skies thick with ash, and the surface littered with corpses. The survivors of Earthcore's ill-fated platinum mining expedition move forward, looking to the Andes for the next find — a trillion dollar motherlode that will make them rich ... or dead.