CORONA Satellite Photograph over Chimkurgan Tepa (October 20, 1964). This site is ruins of a huge fortification with double enclosures. The outer enclosure uses cliffs of fluvial terraces for the north side and a dissected valley for the west side. It is obvious that the eastern side of the outer enclosure is an anartificial trench.

CORONA satellite photographs are available from U. S. Geological Survey, EROS Data Center, Sioux Falls, SD, USA.