This image from NASAs Mars Odyssey shows Padus Vallis. Located east of Mangala Valles, Padus Vallis is just one of the many small channels that emp...

This image from NASAs Mars Odyssey shows part of Hydraotes Chaos. The chaos lies in a valley leading northeast out of Ganges Chasma at the east end...

This image from NASAs Mars Odyssey shows a cross section of Nicholson Crater. The central peak of this crater is surrounded by a layered deposit th...

This image from NASAs Mars Odyssey shows part of the floor of Becquerel Crater, including a large layered deposit. Becquerel Crater is located in A...

This image from NASAs Mars Odyssey shows a wide channel called Tinto Vallis. This northward flowing channel is 180 km (112 miles) long and is locat...

This image from NASAs Mars Odyssey shows many of the channel segments of Granicus Valles. Granicus Valles is a complex channel system located west ...

This image from NASAs Mars Odyssey shows the entirety of Hebes Chasma, including the central rise called Hebes Mensa.

This image from NASAs Mars Odyssey shows part of Iani Chaos. Chaos terrain is typified by mesas and valleys.

This image from NASAs Mars Odyssey shows the northern portion of Hephaestus Fossae. Hephaestus Fossae is a complex channel system in Utopia Planiti...

This image from NASAs Mars Odyssey shows part of Ulysses Fossae, which is located in the Tharsis Volcanic region.

This image from NASAs Mars Odyssey shows a linear feature, part of Labeatis Fossae.

This image from NASAs Mars Odyssey shows sand dunes covering a large portion of the floor of Juventae Chasma.

This image from NASAs Mars Odyssey shows several unnamed channels located in Margaritifer Terra.

This image from NASAs Mars Odyssey shows one of the graben that make up Hyblaeus Fossae.

This image from NASAs Mars Odyssey shows an unnamed channel in Libya Montes.

This image from NASAs Mars Odyssey shows part of the summit caldera of Olympus Mons.

This image from NASAs Mars Odyssey shows the eastern upper flank of Ascraeus Mons.

This image from NASAs Mars Odyssey shows an unnamed crater in the northern plains of Mars.

This image from NASAs Mars Odyssey shows Olympia Undae, a vast dune field in the north polar region of Mars.

This image from NASAs Mars Odyssey shows the eastern flank of Ascraeus Mons. Several tectonic fractures and collapse features, as well as lava flow...

This image from NASAs Mars Odyssey shows Lycus Sulci, a low lying area of ridges and valleys found to the northwest of Olympus Mons.

This image from NASAs Mars Odyssey shows Olympia Undae, a vast dune field in the north polar region of Mars.

This image from NASAs Mars Odyssey shows a small section of Hrad Vallis. Hrad Vallis originates on the northwest margin of the Elysium Volcanic com...

This image from NASAs Mars Odyssey shows the southeastern margin of Olympus Mons, the largest Martian volcano.

This image from NASAs Mars Odyssey shows part of eastern Candor Chasma. Candor Chasma is one of the largest canyons that make up Valles Marineris.

This image from NASAs Mars Odyssey shows a section of Shalbatana Vallis. Located in Xanthe Terra, Shalbatana Vallis is an outflow channel carved by...

This image from NASAs Mars Odyssey shows part of Acheron Fossae. Acheron Fossae is the highly fractured, faulted and deformed terrain located north...

This image from NASAs Mars Odyssey shows part of Tantalus Catena, just one of many north/south trending tectonic graben located south and east of A...

This image from NASAs Mars Odyssey shows part of Granicus Valles. Granicus Valles is a complex channel system located west of Elysium Mons.

This image from NASAs Mars Odyssey shows a section of Indus Vallis. Indus Vallis is 300 km (186 miles) long and is located in Terra Sabaea.

This image from NASAs Mars Odyssey shows two segments of the channel system called Granicus Valles.

This image from NASAs Mars Odyssey shows ppart of Hephaestus Fossae, located in Utopia Planitia.

This image from NASAs Mars Odyssey shows part of Maja Valles, a large channel system in Lunae Planum.

This image from NASAs Mars Odyssey shows part of Hyblaeus Fossae. Hyblaeus Fossae is located southwest of Elysium Mons.

This image from NASAs Mars Odyssey shows linear depressions called Mareotis Fossae. They are part of a huge region of graben that comprise Tempe Te...

This image from NASAs Mars Odyssey shows parallel sets of depressions. These are tectonic graben formed when a block of material is down dropped be...

This image from NASAs Mars Odyssey shows a section of Scamander Vallis. Scamander Vallis is located in northern Terra Sabaea.

This image from NASAs Mars Odyssey shows the lower flank of Olympus Mons.

This image from NASAs Mars Odyssey shows linear features, part of Labeatis Fossae.

This image from NASAs Mars Odyssey shows a portion of Shalbatana Vallis.

This image from NASAs Mars Odyssey shows many of the channel segments of Granicus Valles. Granicus Valles is a complex channel system located west ...

This image from NASAs Mars Odyssey shows linear depressions, part of Cerberus Fossae.

This image from NASAs Mars Odyssey shows part of Tractus Catena, just one of many north/south trending tectonic graben located south and east of Al...

This image from NASAs Mars Odyssey shows a circular feature, part of the summit caldera of Olympus Mons.

This image from NASAs Mars Odyssey shows mesas and valleys that are part of Echus Chaos.

This image from NASAs Mars Odyssey shows Ismeniae Fossae, a large region located in northeastern Arabia Terra, containing irregular valleys.

This image from NASAs Mars Odyssey shows part of Hephaestus Fossae, located in Utopia Planitia.

This image from NASAs Mars Odyssey shows a portion of Kasei Valles. Kasei Valles is one of the largest outflow channel systems on Mars.

This image from NASAs Mars Odyssey shows a portion of Kasei Valles. Kasei Valles is one of the largest outflow channel systems on Mars.

This image from NASAs Mars Odyssey shows a section of Nanedi Valles. Located In Xanthe Terra, the channel system is 508 km (315 miles) long.