Dr. Sam Osmanagich, Ph.D. and Lead Excavator Edo Građan explore a newly discovered open tunnel in Ravne Tunnel Labyrinth on July 6, 2017. Most new tunnels in Ravne Tunnel Labyrinth were filled in to the brim with "fill-in material" (loose sand and small river stones) an estimated 4,600 years ago by an unknown advanced cultures. The tunnel discovered and explored on July 6, 2017 was not filled but is open, traveling north-south. Archaeological Park: Bosnian Pyramid of the Sun Foundation's official web site: piramidasunca.ba/eng/ "Dr. Sam Osmanagich, Ph.D. explains Archaeological Park Foundation's open information policy" www.youtube.com/watch?v=la7_JaIgoqw "New LIDAR Scan of the Bosnian Pyramid Complex Proves Dr. Sam Osmanagich Right — and Proves Dr. Robert Schoch, Zahi Hawass, Archaeology Magazine, and Wikipedia Wrong" anamericaninbosnia.wordpress.com/2016/07/17/new-lidar-scan-of-the-bosnian-pyramid-complex-proves-dr-sam-osmanagich-right-and-proves-dr-robert-schoch-zahi-hawass-archaeology-magazine-and-wikipedia-wrong/ "The Mysterious Anti-Scientific Agenda of Robert Schoch - Part 1: The Bosnian Pyramid Complex" anamericaninbosnia.blogspot.ba/2013/03/the-mysterious-anti-scientific-agenda_455.html "Megasphere: The Stone Ball that Wouldn’t Roll Away: Archaeology Magazine Ignored the March 2016 Discovery of the Most Massive Stone Sphere in the World . . . But It’s Still There" anamericaninbosnia.wordpress.com/2016/09/24/megasphere-the-stone-ball-that-wouldnt-roll-away-archaeology-magazine-ignored-the-march-2016-discovery-of-the-most-massive-stone-sphere-in-the-world-but-its-still-there