clay

[lynnharris]

Does anyone happen to know about tunnels filled with clay. And what the meaning of black clay vs gray clay would be?

 

[ericwt]

Not sure what area you are digging in or what your target is (but I have a hunch). Clay turning grey does mean something for certain targets. My explanation is only for one kind of target. But I will not be able to discuss this on a public forum.

Email me and if you can answer one or two questions I might have an answer for you. If it is not what I expect it is I am sure others can help you

It has nothing to do with treasure signs or markers, however.