Above, oblique view shows the geoglyphs to be artificial land formations used for agricultural purposes.

Above, close-up oblique view showing the "geoglyph" agricultural system with small mounds and parallel embankments. . see geoglyphs agriculture page

Above, high resolution close-up oblique view of another zone with this "fossilised" system of agriculture and hilltop struck by earthquakes.

Above, close-up oblique view.

Above, close-up oblique view shows how the geoglyph field system was supplied with water from horizontal channels fed by natural streams.

Above, close-up oblique view shows stream feeding irrigation channels.

Above, an irrigation canal winds its way along the contours.

Above, this canal from a later period winds its way through the "geoglyphs" or disused ancient agricultural patterns on right of photo.

Above, close-up of the canal winding its way through the "geoglyphs" or disused ancient agricultural patterns.

Above, the "geoglyph" agricultural system appears ancient and eroded here in this oblique view.

Above, this close-up shows damage and erosion after earthquakes in this oblique view.

Above, close-up oblique view showing remains of ancient terraces with probable earthquake damage.

Above, in the same zone south-east of Lake Titicaca, some parallel canals for agriculture, now disused.

Above, in the same zone south-east of Lake Titicaca, some irregular field boundaries.

Above, close-up of some irregular field boundaries.

Above, some irregular field boundaries oblique view.

close-up of more "geoglyphs" or landforms in the same zone south-east of Lake Titicaca.

Above, this irrigation channel follows the contour around the mountains.

Above, still in the zone south-east of Lake Titicaca, some straight canals where the terrain is more suitable.

Above, the two horizontal parallel canals are 1 x furlong or 660 feet or about 200 metres apart and they form plots of 200 x 250 metres or 400 x 500 Sumerian cubits. Dating is important to establish which unit of measurement was originally used, see below.

Above, an underlaying system of canals forms a chequerboard pattern with squares of 600 sumerian cubits or 200 metres.

Above, the underlaying canals form blocks of 600 Sumerian cubits or 300 metres. It can be seen on this photo where older canals have been redug in modern times. The metre was adopted by the French academy of Sciences for universal use in 1793, so if these canals are more recent than 1793, or are modern, they could have been set out in metres, however if they are pre-Columbian then they are probably set out in "Sumerian" cubits of 19.8" whilst if they date from after the time of the Spanish Conquest they could still be in "Sumerian" units such as cubits and furlongs since these were also brought over by the Spanish as the old Spanish vara was in fact the "Sumerian" yard of 33.0". Each block is 600 Sumerian cubits or 360 Sumerian yards square.