Another volcanic landform near the presumed origin of the north polar meltwater channel is attached below.<br /><br /> Taken from:<br /><br />MORPHOLOGY OF SOME SMALL MARS NORTH-POLAR VOLCANIC EDIFICES FROM VIKING IMAGES AND MOLA TOPOGRAPHY. <br />H. M. Wright1, S. E. H. Sakimoto2, and J. B. Garvin3, 1 ECO at USGS, 345 Middlefield Rd., MS 977, Menlo Park, CA 94025 (****@core2.gsfc.nasa.gov), 2USRA at NASA's GSFC, Code 921, Greenbelt, MD 20771, 3NASA's GSFC, Code 921, Greenbelt, MD 20771.<br />Lunar and Planetary Science XXXI 1894.pdf<br />
http://www.lpi.usra.edu/meetings/lpsc2000/pdf/1894.pdf<br /><br /> Note that by "origin" of the meltwater channel I don't mean the terminus that is visible in the image of it I posted. The terminus is the part where it breaks up into two large branches, that is close to the large sulfate deposit.<br /> The origin would be outside of the image, beyond the bottom edge of the image. The bottom edge of the image is at about 270E (90W).<br /> So the origin of the channel would be longitude further east than 270E, so might be around 300E, the approximate location of the volcanic landforms.<br /><br /><br /> Bob Clark<br /> <div class="Discussion_UserSignature"> </div>