We found 3 crosses similar to this one, this being the largest and easiest to see. We even saw one that looked something like a swastika. Since these were supposedly carved before Christ, it kind of shoots down the idea of Christian Crosses. When the Spanish came and saw these in various places, they came up with the idea that Saint Mathew came here to Evangelize the natives that lived here. Thus the crosses. The legend didn�t fly, but the story is still told. Too much history to get into it all here. There are many ancient cultures that use the cross symbol. Usual to do with the center and 4 directions or powers.