reminds me:
http://oi.uchicago.edu/gallery/pa_iran_paai_asf/index.php/11E2_72dpi.png?action=big&size=original
Thanks! (caption — IRAN: Near Takht-i-Sulaiman, View of the Hollow Conoid Rock Shown in AE 680, From an Altitude of 1,700 M on July 27, 1937.)