The Cydonia DM Pyramid Landform
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The Cydonia D&M Pyramid Landform

September 16, 2003
Images of the Cydonia region of Mars continue to be popular among visitors to the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) web site. The above pictures (one annotated, the other not) are mosaics of two images from MGS MOC and one from the Mars Odyssey Thermal Emission Imaging System visible camera (THEMIS VIS). The mosaics highlight a Cydonia landform popularly known as the D&M Pyramid. It is located near 40.7°N, 9.6°W.

Although it is not really shaped like a pyramid, the Cydonia landform is one of thousands of massifs, buttes, mesas, knobs, and blocks that mark the transition from the far northwestern Arabia Terra cratered highlands down to the northeastern Acidalia Planitia lowlands. Each block, whether shaped like a face, a pyramid, or simply a mesa, massif, or knob, is a remnant of the bedrock of northeastern Arabia that was left behind as erosion slowly degraded the terrain along this zone between the highlands and the lowlands. A few outcroppings of laye

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