english: As witness to their passage, they left behind mysterious engravings and paintings, like this panel of humans, triangles and zigzags from Ojo Guareña in Spain.
non_english: Ako svedectvo po nich zostali tajomné rytiny a maľby, ako sú tieto postavy, trojuholníky a cik-caky zo španielskeho Ojo Guareña.