IRELAND

USA

In the United States we have the same type of cross-sectional channel depictions
next to concentric circles. Most of them are very old. One example above.

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NAZCA LINES PERU

Above: Huge concentric circle with lines going through it.
In terms of the lines, many kilometers
long, they crisscross sectors of the
pampas in all directions.
Many of the lines form geometric figures: angles,
triangles, bunches, spirals, rectangles, wavy lines, etc.
Other lines form concentric circles converging with or emanating from a promontory.
Other prints have formed "roads" like geometric planes and appear to have
been occupied by large groups of the population.

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TARA IRELAND

Concentric circles, surrounded by a wall at a distance.

Martin Brennan (1983), who spent over a decade investigating these
structures, published a wonderful documentation of their features.
Though he assumes them to be a product of solar worship, his research is
thorough and includes mythological references to these megalithic works--most
intriguing from the standpoint of this discussion is Tara. Brennan states that:

Tara lies 10 miles southwest of Newgrange and, like Newgrange,
it is steeped in ancient myth and tradition. It has always been
associated with Samhain, the Celtic observance of the year's turning
in November, and this event is well documented. This neolithic observatory is aligned,
according to Brennan, to cross-quarter days November 8 and February 4.
The carved stone within this megalithic structure depicts concentric
circles similar to the earth works evident in the aerial photograph of Tara shown.

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GOSECK GERMANY


http://www.dw-world.de/english/0,3367,1441_A_942824_1_A,00.html

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ISRAEL

Rogem Hiri - four concentric circles enclosing a central, round cairn.

Rogem Hiri is one of the most intriguing archeological sites in Israel. A variety of theories concerning the function of this structure, which has no parallel in the Middle East, had been proposed prior to the current research: a religious center; a defensive enclosure; a large burial complex; a center for astronomical observation; and a calendrical device. The structure was even identified as the tomb of Og, King of the Bashan and last of the giants. (Deuteronomy 3:11)

The only site of its kind in the Middle East, comparisons have been made between it and ruins on Malta, as well as the European stone circles.

Link