Of course! You're right, thank you.

The SRA survivors of the McMartin preschool case described tunnels and sacrifice. The tunnels were said not to exist, used to discredit the child victims. Years later, despite prior attempts to fill the tunnels, they were discovered.

https://ritualabuse.us/ritualabuse/articles/mcmartin-preschool-case-what-really-happened-and-the-coverup/ The traumatic crimes reported by the toddlers bear an uncanny resemblance to mind control programming, a specialty of certain classified federal agencies and cult cut-outs on the black budget payroll.8 The children are often ridiculed because some of their charges are impossible. Tunnels under the preschool? Too ludicrous to consider. But as it happens, there were tunnels, confirmed in 1993 by a team of five scientists from leading universities.

The unearthing of the tunnels, like much of the critical evidence, never made it to the courtroom. They have been discreetly excluded from newspaper accounts. Filling the void, Debbie Nathan, a widely published skeptic of ritual abuse, heaped ridicule on the tunnel allegations in the Village Voice in June 1990. She maintained the McMartin site had already been “painstakingly probed for tunnels. None were found”9 Nathan’s account is a fabrication. In fact, recalls Dr. Roland Summit, who contributed to the final report on the tunnel excavation, parents started digging and prosecutors, reluctantly forced to a showdown, “commissioned a superficial search of open terrain.” District Attorney Ira Reiner then declared the tunnel stories unfounded “without going under the concrete floor of the preschool.”Once the tunnels were officially discounted, attempts to explore for an underground reality were instant targets for ridicule.

http://mds.marshall.edu/cgi/viewcontent.cgi?article=1006&context=psychology_faculty: Stickel’s dig was conducted from May 8 to May 31, 1990. His conclusions were stunning. “The most substantial evidence for a tunnel was discovered under the north (E/W) axis of the preschool. The apparent entrance was located under the west wall of classroom #4…the signature of the entrance was clear and it was clear that it had been filled back in with soil and debris…Beyond the entrance, this northern tunnel meandered under classroom #4 and then under most of classroom #3…” (See Figure 1.)

The tunnel was indicated by many factors, according to Stickel. These included distinctive soil color, soil texture, soil compaction, the “human sized architecture” permitting passage, presence of an earthen roof, possible shoring, and the presence of a great number (1603) of artifacts found “densely intermixed in the artificial fill within most of the tunnel.” Archeologist Stickel concluded, “There is no other scenario that fits all of the facts except that the feature was indeed a tunnel…Therefore, this project’s goals or objectives were met with data which probabilistically corroborates reports made by the children regarding the site” (p.96)

https://youtu.be/QVweJZp6elI?t=6m15s