Based on Chakana, the sriyantra´s geoglyph and a symbol of a 600 kms diameter could be seen from space near Cordoba, Argentina

The Sriyantra tantric symbol (1) (also called shrichakra ;“wheel of Shri” (2) represented by the geoglyph of 600 km in diameter with the center near Cordoba, Argentina) was etched in the pampas many millenniums before. Its pre-historic age, authorship, purpose, etc. need to be examined since it was created before the writing was used in Egypt or Babilon. The design using lines, canals, ponds, water tanks, etc. which were created at least 40.000 years ago (before last glaciation period). The detailed field inspection by multi-disciplinary team of specialists is necessary to answer some fundamental questions about its origin, age, resaons for its creation, etc. The Sriyantra's 9 constituent triangles vary in size and shape and intersect to form 43 smaller triangles, organized in 5 concentric levels. Together they represent the totality of the cosmos and express Advaita (non-duality) for a meditating follower (3). Early descriptions of Sriyantra exist only in the Vedic tradition, in the oldest text coming to us form the Indus Valley culture. In Brahmavidya (Adyar Library) Subhash Kak argues that the description of Sri Yantra is identical to the yantra described in the Śvetāśvatara Upanisad (3) in 6th century b.C. (4); its earliest version was written in Sanskrit, was translated later into Arabic, and only in the middle of the 19th century it surfaced in major European languages).

author: C.H.Dabrowski
source: @IVarsovienne via Google Earth

In the Shri Vidya school of Hindu tantra, the Sri Yantra (Sanskrit "sacred instrument") is a diagram formed by nine interlocking triangles that surround and radiate out from the central point. 

source: www.sriyantraresearch.com

It represents the goddess in her form of Shri Lalita or Tripura Sundari, "the beauty of the three worlds (Heaven, Earth, Hell)". The worship of the Sri Chakra is central to the Shri Vidya system of Hindu worship and is probably the most famous visual image in all of Hindu Tantric tradition. Its literature and practice is perhaps more systematic than that of any other Shakta sect (4). Four isosceles triangles with the apices upwards, representing Shiva (masculine energy) and five isosceles triangles with the apices downward, symbolizing Shakti (feminine energy) are balanced. Its design composed of nine triangles is also known as the Navayoni Chakra. (5)

source:www.sriyantraresearch.com

to see more details see the theme @IVarsovienne blog or  @IVarsovienne.edu FB

Notes:

1) https://en.wikipedia.org/wiki/Shri_Yantra Accessed 31 May 2021.                           

2) Britannica, The Editors of Encyclopaedia. "Yantra". Encyclopedia Britannica, 26 Nov. 2003, https://www.britannica.com/topic/yantra. Accessed 6 June 2021.

3) https://www.wisdomlib.org/definition/shri-yantra Accessed 31 May 2021.               

4) https://en.wikipedia.org/wiki/Shri_Yantra Accessed 31 May 2021. 

5) https://www.wisdomlib.org/definition/shri-yantra Accessed 31 May 2021.                                                                                    6) https://www.wisdomlib.org/definition/shrividya Accessed 31 May 2021.