This image from NASAs Mars Odyssey shows part of the complex region of channels and craters between Lunae Planum and Xanthe Terra.

This image from NASAs Mars Odyssey shows part of the summit of Ascraeus Mons. Ascraeus Mons is the northernmost and tallest of the three large alig...

This image from NASAs Mars Odyssey shows part of two chasmatas – Hebes Chasma and Ophir Chasma.

This image from NASAs Mars Odyssey shows a section of one of the many channel forms found radial to the Elysium Mons volcanic complex.

This image from NASAs Mars Odyssey shows a portion of Tantalus Fossae. The linear features are tectonic graben.

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

This image from NASAs Mars Odyssey shows Hebrus Valles, located west of the Elysium Volcanic complex.

This image from NASAs Mars Odyssey shows a section of Cerberus Fossae. Cerberus Fossae are located in Elysium Planitia, southeast of the Elysium Mo...

This image from NASAs Mars Odyssey shows a section of Cerberus Fossae. Cerberus Fossae are located in Elysium Planitia, southeast of the Elysium Mo...

This image from NASAs Mars Odyssey shows multiple channels, part of Rubicon Valles.

This image from NASAs Mars Odyssey shows part of the eastern flank of Pavonis Mons.

This image from NASAs Mars Odyssey shows a portion of a large unnamed channel located east of Echus Chasma.

This image from NASAs Mars Odyssey shows channels called Maumee Valles.

This image from NASAs Mars Odyssey shows part of a large unnamed channel located in northern Arabia Terra.

This image from NASAs Mars Odyssey shows part of the northeastern margin of Terra Sabaea.

This image from NASAs Mars Odyssey shows a portion of Cyane Sulci.

This image from NASAs Mars Odyssey shows part of Cerunius Fossae. The linear depressions are fault bounded features called graben.

This image from NASAs Mars Odyssey shows a small portion of Tempe Fossae. The linear features are tectonic graben.

This image from NASAs Mars Odyssey shows a small portion of Tempe Fossae. The linear features are tectonic graben.

This image from NASAs Mars Odyssey shows a portion of Buvinda Vallis, a channel located near the flank of Hecates Tholus.

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

This image from NASAs Mars Odyssey shows a section of one of the many channel forms found radial to the Elysium Mons volcanic complex.

This image from NASAs Mars Odyssey shows a section of Cerberus Fossae.

This image from NASAs Mars Odyssey shows part of the northern extent of Eumenides Dorsum, a large linear rise located in southern Amazonis Planitia.

This image from NASAs Mars Odyssey shows the northern part of Alba Mons. The large linear depressions are graben, a tectonic feature created by fau...

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

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

This image from NASAs Mars Odyssey shows Ismeniae Fossae, a large region containing irregular mesas and valleys.

This image from NASAs Mars Odyssey shows Alba Fossae, a set of long valleys on the western side of Alba Mons.

This image from NASAs Mars Odyssey shows northern Terra Sabaea, on the topographic boundary between the highlands of Terra Sabaea and the lower ele...

This image from NASAs Mars Odyssey shows windstreaks located in Syrtis Major Planum.

This image from NASAs Mars Odyssey shows a section of one of the many channel forms found radial to the Elysium Mons volcanic complex.

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 portion of Kasei Valles. Kasei Valles is one of the largest outflow channel systems on Mars.

This image from NASAs Mars Odyssey shows three craters located in northern Arabia Terra.

This image from NASAs Mars Odyssey shows multiple channel systems located in northern Terra Sabaea.

This image from NASAs Mars Odyssey shows a section of Bahram Vallis. This channel is located in northern Lunae Planum, south of Kasei Valles.

This image from NASAs Mars Odyssey shows Alba Fossae, a set of long valleys on the western side of Alba Mons.

This image from NASAs Mars Odyssey shows one of the channels that comprise Granicus Valles. Granicus Valles is a complex channel system located wes...

This image from NASAs Mars Odyssey shows a section of Cerberus Fossae. Cerberus Fossae are located in Elysium Planitia, southeast of the Elysium Mo...

This image from NASAs Mars Odyssey shows the ridge forms that are typical of Lycus Sulci, a low lying area found to the northwest of Olympus Mons.

This image from NASAs Mars Odyssey shows a portion of the northern flank of Pavonis Mons.

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

This image from NASAs Mars Odyssey shows mesas and valleys, part of Protonilus Mensae.

This image from NASAs Mars Odyssey shows an area east of Olympus Mons. The majority of the image is comprised of volcanic flows.

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 Phlegra Montes, a region of hills and ridges near Arcadia Planitia.

This image from NASAs Mars Odyssey shows a cross section of Elysium Mons, including part of the summit caldera.

This image from NASAs Mars Odyssey shows a portion of Cyane Sulci. Located to the northeast of Olympus Mons, Cyane Sulci is a complexly fractured r...

This image from NASAs Mars Odyssey shows the western flank of Ceraunius Tholus. At only 128 km (79 miles) across, it is one of the smaller Tharsis ...