The section of this document reproduced below contains photographs of rock formations weathered by wind and other forces into intriguing shapes. The conditions of this frigid desert are as close to that of Mars our world has to offer. If seen with insufficient detail and some lighting conditions some could be mistaken for life forms or traces. If some of these examples were seen in the distance in the Martian desert with a lander or rover camera there would be numerous references to them, showing enlarged 'close ups' with labels suggesting exotic interpretations on enthusiast web sites. These pages were scanned from a copy I have of an 'interagency report' of which many were circulated on topics of attention in the U.S. Geological Survey branch of Astrogeology, where I worked at the end of the Apollo era. The quality of the printed reproductions varies, I have tried to preserve all relevant detail with just enough scanned resolution to avoid significant moire patterns from the dot screen used in the reproduction.
Rock eroded into long bone like shape
Rocks eroded into curved and pointed shapes.
Page 96 introductory text
Page 97 'bush' rock
Page 98 'undulatory' shaped rock
Page 99 cavernously weathered rock textures
Page 100 'armored animal shell' (at least that's my 'association'!)
Page 101 curved eroded rock crowns
Page 102 large eroded overhang
Page 103 A stubby natural tripod
Page 104 'Big dove feeding young'
Page 105 'bowl' eroded out of the rock
Page 106 'Fakir's bed of nails'
Page 107 'weathered bare headed sphinx'
Page 108 weathered bedrock valley side
Page 109 weathered boulder
Page 110 leaning eroded remnant
Page 111 tall rocks
Page 112 pedestal rock
Page 113 overhanging weathered rock
Page 114 potholes over time
Page 115 bone shaped rock
Page 116 bone or bird?