Los ocho elementos Guadalteba

If there is a land repository of ancient enigmas and treasures, this is Guadalteba, land of borders and legend. For thousands of years, its inhabitants have left us traces of their passage, like this 8-pointed star that is lost in the memory of time.
8 points, 8 places and 8 elements. Do you dare to explore its meaning?
Choose one of the itineraries, solve the enigmas, get "Guads" and exchange them in complicit establishments.