On July 25, 1976 the US spacecraft Viking-1 photographed an astounding formation on the surface of Mars. The 1.5 kilometer-long object bore resemblance to woman's face. The photograph produced a sensation in the whole world - almost all newspapers and magazines of the world published the picture on their pages, the image of the Martian face was on constant presence on television.Astronomers said the image of the face on the red planet was a wholly incidental trick of nature. The face, however, was oriented on the Martian meridian, but it was considered incidental too. Specialists from the Boston-based Analytic Sciences created a 3-D image of the above-mentioned structure and discovered the image of the 'humanoid face' on it indeed. Having intensified the contrast of the shaded right side of the image, specialists found the second 'eye' situated about 100 meters beneath the 'nose.' To crown it all, there was something reminiscent of 'teeth' too. According to the results of the analysis, specialists concluded the anomalous formation could not be of the terrestrial origin. Furthermore, engineers Vincent DiPietro and Gregory Malenaar found another image of the face in the archives of Martian photographs. The picture was taken with different lighting 35 days after the first original image was taken. The detailed computer analysis proved the peculiarities of the first picture and revealed new details as well. One could see an 'eyeball,' a 'pupil' and 'teeth' on the sun-lit 'cheek.' The two engineers concluded that if the details of the stone head were of the natural origin, the nature would have to be a reasonable creature.