Perhaps the "" near Playa Quemada is already known. The time of emergence is unknown, but presumably around 2005. The indigenous islanders can not explain the structure and assumes that it could be the work of one of the esoteric groups that settled on the island. Interestingly, the arrow (extended to the east) points exactly to the pyramids of Giza.
pretty cool new topic around GEC however debated and mentioned on many webpages. -below I quote the one I have found useful:
... comparison with past aerial photos shows that it did not exist before the year 2000*, and Gazette editor Shaun Addison definitely saw a man who was neither little nor green working on it a few years back. If anyone has the faintest idea what it means, we’d love to hear from you.
The arrow is not the only man-made pattern around Playa Quemada, where a rose and a lily can also be seen.