The critics say that no two map dowsers mark the same spot. Here is an example where two have. Look closely at okiedowser and widomanmx's hits. Red marked a spot for me on a site a while back. He said it gave off an archaeological signal. He did not say it was treasure, just something not natural. A GPR confirmed there was something buried at the EXACT spot. We dug down and there was an old large metal cable. The property owner did not have a clue why it would be there. Dowsers can find anomalies just as a metal detector does. I have seen it proven many times. When you are an eyewitness, you become a believer. You have to dig to see what is there. A metal detector is a great tool but if you dig everywhere it goes off I will guarantee you that you will be digging hundreds upon hundreds of holes with junk in them versus finding treasure. Nobody said was is easy.