Interesting stuff, if like me you are into mysteries:
In the early twentieth century Charles Fort put together great quantities of exhaustively documented ‘puzzling evidence.’ This is data which science is unable or unwilling to explain, such as rains of fish or blood, mysterious animals, or manufactured artifacts in deep strata. Whilst mining in Africa, and drilling very deep down into the earth, some miners discovered handmade artifacts. The strata carbon dated to be billions of years old, humans are millions of years old, so where did these artifacts come from?
If you like having your preconceptions about stuff twisted & turned upside down, these texts are really fascinating.