Over the past year, an archaeological expedition from Kazakhstan's Kostanay University, working in collaboration with Vilnius University in Lithuania, has been examining the geoglyphs. More than 50 geoglyphs with various shapes and sizes, including a massive swastika, have been discovered across northern Kazakhstan in Central Asia.
The Lithuanian researcher Giedrė Motuzaitė-Matuzevičiūtė Keen suggested that those structures could have been used to mark the ownership of the land. She has dated some of the geoglyphs - they come from the first myllenium B.C.
The geoglyphs are designed in a variety of geometric shapes, including squares, rings, crosses and swastikas. Researchers say that the geoglyphs are difficult to see on the ground, but can easily be seen from the sky.
The introduction of high-resolution Google Earth imagery over the last decade has helped both professional archaeologists and amateurs detect and study these enigmatic structures.