The Anomaly Files Series by Michael Rutger, Michael Marshall Smith

Not all secrets are meant to be found.If Indiana Jones lived in the X-Files era, he might bear at least a passing resemblance to Nolan Moore -- a rogue archaeologist hosting a documentary series derisively dismissed by the "real" experts, but beloved of conspiracy theorists.Nolan sets out to retrace the steps of an explorer from 1909 who claimed to have discovered a mysterious cavern high up in the ancient rock of the Grand Canyon. And, for once, he may have actually found what he seeks... moreNot all secrets are meant to be found.If Indiana Jones lived in the X-Files era, he might bear at least a passing resemblance to Nolan Moore -- a rogue archaeologist hosting a documentary series derisively dismissed by the "real" experts, but beloved of conspiracy theorists.Nolan sets out to retrace the steps of an explorer from 1909 who claimed to have discovered a mysterious cavern high up in the ancient rock of the Grand Canyon. And, for once, he may have actually found what he seeks. Then the trip takes a nasty turn, and the cave begins turning against them in mysterious ways.Nolan's story becomes one of survival against seemingly impossible odds. The only way out is to answer a series of intriguing questions: What is this strange cave? How has it remained hidden for so long? And what secret does it conceal that made its last visitors attempt to seal it forever? less

THEY CAME LOOKING FOR ANSWERSA group of explorers arrive in the remote town of Birchlake, Northern California, to investigate the appearance of mysterious stone walls.WHAT THEY FOUND WERE QUESTIONSA teenage girl has disappeared without a trace.FOR NOT EVERYONE IS AS THEY SEEMSoon it becomes clear that the two events may be connected in the most terrifying way. Because sometimes the walls we build end up closing us in . .