Secret Underground of Gudimallam Temple, India – Is Shiva an Alien?
Ancient temple (archeologists and scholars believe it to 2,400 years old while locals believe it to be ~12,000 years old), secret stone compartments, 9 secret passages to underground areas of the temple, and a stone idol made of stone not of this world.
https://www.youtube.com/watch?v=OsfZI-tZw9c