Above, Herman and Candelaria Zapp pose with baby Pampa in Alaska as they finish the first leg of their journey around the world in 2002.
The lines and figures can really only be seen from the air. So for centuries people had walked the pampa without noticing a thing.
The Zapps say they intend to keep going, but may take a break in two years when their oldest son, Pampa, turn 10.
The provincial government in Buenos Aires says it may imitate La Pampa province, allowing pigeon hunting to keep the birds in check.
In the middle of the Argentine pampa , there is mutual respect between the realms of modern science and traditional belief.
100m (13, 450ft) Pampa Corral, near Cusco, Peru: The farmer Julio Hanneco grows 215 varieties of potatoes in his highland village.
Enclosed between the Pacific and the high mountain range of the Andes, the Nazca pampa is often veiled in mist
Each of their four children was born in a different country: Pampa, 8, in the United States;
Environmental variables for modeling wheat yields in the southwest pampa region of Argentina
Each of their kids has a different nationality: Pampa, eight, being born in North Carolina in America;