In the southern central Sahara, in the northern mountain massifs of Niger and Mali, but also far away, in southern Morocco, you can see stone circles with strange dotted lines next to them. The lines are made of small stone "towers", which are usually arranged in an arc and sometimes also in a straight line next to the main cairn.
According to datings, these tombs are probably the youngest of the Saharan monuments. Measurements range from 1,500 B.C. to just under 1,500 A.D. Thus, these sites continued to be built into the Islamic period and the Medieval.
Website with finds of "Tombs with Alignment" in the Ighaz area near Ingall, in Mali >
In this small area alone, between the town of Ingall and the Air Mountains, around 4,600 sites are listed.
Different types of alignments:
Images courtesy of Google Earth™
