The next morning at 8 am we went on a guided tour of the bronze-age
rock engravings in the Valée des Merveilles. Our guide
(Yves) took us to see several different sets of rock engravings.
The engravings are always made on horizontal grey schist rock
with red iron ore deposits on the surface. They are cut with a
piece of quartz using a boring technique (not by drawing lines).
They are quite symbolic and represent only a limited set of images
which include bulls horns, yokes, daggers, halbards, reticulés
(networks of lines) and the occasional human. They are dated by
comparing the drawn objects with metal implements such as bronze
daggers found in the area. This guide suggested that the motivation
for making the engravings was to persuade the gods to make the
crops and farm animals grow well.