Keywords: Layers in Lockyer Crater.jpg en Layers exposed in Lockyer Crater as seen by hirise under HiWish program location is 28 3 N and 160 7 E http //hirise lpl arizona edu/ESP_021899_2085 Jim Secosky modified nasa image 2011-05-09 PD-USGov-Military-Navy Impact craters on Mars Photos by Mars Reconnaissance Orbiter |