Wheres the gold?

Hi Friends,

A little challenge from the Gold Prospectors magazine that recently came in the mail. Let’s see if you can figure it out.

Where is the gold - A, B, C or D?

Here is the background and hint:

I will post the answer in a couple of days, but let me know what you think it is in the comments! :)

I can tell you that I got it wrong… good luck!

Thanks for coming by,
Brian