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Reports on a high-resolution images that strongly indicate the occurrence of seepage and surface runoff on Mars from Mars Global Surveyor Mars Orbiter Camera. Observations; Types of alcoves recognized; Age relations of the craters and landforms; Attributes of the landforms.

Displays and discusses images from the Mars Orbiter Camera, an instrument on the Mars Global Surveyor spacecraft that orbits Mars, and discusses the processes that shaped the Martian surface. Sediments that are deep enough to fill small craters completely; Possible underestimation of the ages of some Martian surfaces; Evidence for recent volcanism from the updated crater counts.

Displays and discusses images from the Mars Orbiter Camera, an instrument on the Mars Global Surveyor space probe that orbits Mars, and the processes that shaped the Martian surface. Origin and descriptions of valley networks; Whether the source of the channels was predominantly precipitation or ground water; Arguments for a groundwater source; Images showing flow for an extended period; Wind-distributed material that has filled channels and obscured evidence.

Displays and describes images from the Mars Orbiter Camera, an instrument on the Mars Global Surveyor space probe that orbits Mars, and discusses processes that shaped the Martian surface. Evidence for ubiquitous, fine-scale layering within the Valles Marineris canyon; Unprecedented observations of detailed wall structures; Question of whether the origin for the layering is volcanic or sedimentary.