I agree with Catastrophe. Just because we want something to be true, does not make it so. I am always open to new ideas and new findings. But the ones about rivers on Mars simply do not hold water for me. And the ones that claim that they are roads, are just too hard for my imagination to try to traverse.Imagination is a wonderful thing. Remember those "hand shaped" areas in South America which were claimed to be alien 'airports'? They turned out to be not much larger than hand prints. Perhaps tiny aliens? Sadly, some people seem to see shapes in natural features and superimpose the first thing which comes to mind.