Shocking pix of kidnap vic Jaycee Lee Dugard's backyard concentration camp where she was a sex slave to a psycho for 18 years!

RadarOnline.com has exclusive photos inside convicted sex offender Phillip Garrido's backyard prison camp where he raped and held captive Jaycee Lee Dugar for nearly two decades, fathering two children by his sex slave before his arrest last week.

Photog Nick Stern, a LA freelancer, snapped the pix without police permission. 

Stern said he had not seen any police officers and did not consider the lot a crime scene, adding. the backyard stalag had an unsettling "calmness about it."

"You do feel like you are cocooned away from the rest of civilization."

Click here for the pix inside Garrido's house of horrors that shocked the world.

ONGOING STORY