Figure 1. The fretted channel and lineated valleys of the central Deuteronilus-Protonilus Mensae region.

1. A Viking Orbiter mosaic and map. Boxes show locations of images in Fig. 2.
2. Color topographic map with each contour line showing 400-meter-elevation difference.
3. Map showing alcoves (narrow arrows) and broad flow trends of lineated valley fill on the valley floor (wide arrows). From Mars Express High Resolution Stereo Camera, THEMIS and MOC images.
4. Topographic profiles from north to south across the same region. From MOLA locations shown in b).

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Geological Society of America
2005 Annual Meeting News Release 05-37, 14 October 2005.