A friend of mine gave me one of these flat stones for the Orions to give a reading on. He explained to me that they were found at the pyramids in Egypt and provided a photo of many of them, ranging in sizes. The Orions provided an answer that made complete sense, one that we did not think of. They said it is a spiders’ trap door and the different sizes are because there are different size of spiders. You can look this up on YouTube as well.