Iran... We lived there for about 11 months. This is *exactly* the color that I remember seeing everywhere ... Streets, walls, roads, fields, indoors, outdoors, food, etc. As though the entire place was painted with one giant brush!
Alisadr Cave - located in 75 km north of Hamedan in western Iran .The cave belongs to second Jurassic period (130-190 million years ago); its walls can extend up to 40 meters high, and it contains several large, deep lakes. - http://www.pbase.com/k_amj/alisadr