NASA/JPL's recent announcement of the mammoth subsurface stores of water
found below 60 degrees south latitude on Mars coincides very nicely with the
locations of those peculiar crater-bottom ponds and biological-appearing oddities
discussed and examined elsewhere on this site.
To the right I've
superimposed a properly scaled version of Mars Odyssey's February 2002
neutron spectrometer data against my stereographic location map.
My map starts at 55 degrees south. Only the pond near Darwin (at position #1
around 11 o'clock) falls slightly outside that zone of maximum hydrogen
concentration indicated by the blue.
Stereographic projection map data: Mars Orbital Laser Altimetry, courtesy GSFC/NASA. Neutron
spectrometer data: Los Alamos National Laboratory and the University of Arizona / Dr. William Boynton, principal investigator.