The ancients marked some of there sites with a what we call a "death trap symbol" , But they were basically "marked" for the dig spot. There are other ways and setups which are not really "DT marked" in a common knowledge sense, but were trapped. There were many groups that came after this stuff and figured it out fairly easy, although there is still alot of stuff left intact and missed. Usually the "spanish" and later, took the the stuff and set up another trap over the empty site and tried to get you to dig, since it was so easy for them find it. They relocated some and carried away what they could. There are many sets of symbols that will be at a site, depending on how many groups were there. What works at one site will not always work at another. Dign4it was very clever, but never understood this, as many others in his footsteps. He thought it was all one group, with only secret societies following. Also, there was Jesuit and early Spanish that did not follow any set code. Some of these are set up biblically, for which there were followers that again found, removed and relocated the goods. So you always take a chance at every site and have to read what is really going on. This is dangerous stuff and no group wanted you to get what they buried, or found and reburied. You may get lucky and discover a way that lead you to recover a cache or two, but that does not break any particular code of how all sites are set up.