I did found this in a birch forest. It seems to be an offering. It shouldn't surprise, because here remains some pagan-celtic traditions as Carnaval Tradicional and Hogueras de San Juan. Is very known that birch is the sacred tree for celts and another indoeuropeans tribes.
There were liliums, an apple over a bed of oak's leafs. And notice the three sticks arrow pointing to the top of the stone, is like the symbol in this article: https://druidgarden.wordpress.com/20...y-and-meaning/![]()