The northern lowlands and sedimentary regions of Mars are dotted with curious formations. Tens of thousands of conical hills, many topped with small craters, and surrounded by deep channels scoured from the surface by flowing liquid.
The northern lowlands and sedimentary regions of Mars are dotted with curious formations. Tens of thousands of conical hills, many topped with small craters, and surrounded by deep channels scoured from the surface by flowing liquid.
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