In Mongolia, we saw this often… a series of tires seemingly half buried in the ground. See the picture. There were some cases where we saw about 50 of these lined up like in the picture.

From the folks here, found out that they demarcate their property boundary in this fashion. Instead of putting a fence, this is how they draw the boundary line. I guess old tires must be very readily available with all that wear and tear on dirt roads.

Have you ever seen anything like this anywhere?