All these things, we theorized were probably going to be on Mars, but the Viking images were never of a sufficient resolution to show these things existed. This martian vista to the left shows a view that rivals those of the aerial photographs used here on Earth. This picture shows the margin of a large lava flow. The big-picture scale of Mars, we saw those pictures from Viking. But now, we're learning a lot at a scale of tens of metres, rather than hundreds or thousands of metres.
All images are clickable for a bigger version.
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