A scientist from the University of Arizona is quoted as saying, "In reality it's more likely that this boulder has been created by breaking away from the bedrock to create a rectangular-shaped feature." If so, where is the bedrock from which it has been broken? Where is the stone that fractured off to create this shape? The object seems to be standing quite on its own on a plain of soil. We cannot say it is an artificial creation, of course, but we can add it to the growing list of peculiar Martian anomalies. Read more here.