As you can see, people from different science fields do have examine Mars surface, even the time when shadows appear, they have analyzed the image in 3D in every possible angle of shadow and light as it happens with the "erosion" of some places on Earth in a sort of "statue" conception to hide the things for the most people and to make evident some things in the proper time like equinoxes, solstices, eclipses and so on. That place mentioned in the site, Marcahuasi, I know myself and I went with the son of the archeologist and anthropologist man mentioned there, Daniel Ruzo. That has been studied by cryptoarcheologist and they are aware the "face" rock gets old during the day when the Sun "changes" position until sunset, etc. So, it's up to everyone to disregard the idea but even prior to that, you have to examine all the details, many of which people just never read before. Therefore I encourage you to do so, specially if you have Cherokee heritage cos probably the indians in your country did something similar. In Peru, for example, there are shadows of the cougar being ONE with the Inka in specific time of the year in certain mountain and all the legends wrote about that. And in fact the legends mention some creatures were coming or entering the caves or rocks or were converted into rocks. We're messing around with something opposite than Carl Sagan's thought. He expected alien outside, but the hyperdimensional beings are next to us but invisible. Not humanoids into our own image and yet pretty much like religions told us. This is something new. It's not like Däniken or J.J.Benitez thought. I even wrote to Zecharia Sitchin (he responded me 3 letters by his own hand cos he doesn't use computers nor e-mail) in spite of some of his ideas are right, others are wrong regarding this very aspect of humanoids or hyperdimensional entities.