Mawrth Vallis, Unlike Ares Vallis, does not have any
collapsed chaos depressions to
provide fluids to the river channel. Instead, it falls within a drainage
basin. Water coming
into the basin from above appears to be the sole source for creating the flow
The dotted lines represent the outline of the drainage basin, whereas the solid
lines are flow features.
order to highlight the outline of the basin, I used the time of day function on
Google Mars and set
it to night.
This removed the
surface features leaving only the mapping lines.
In order to
create a black and white line drawing I reversed the colors.
For additional information on the drainage
basin, the elevations are posted for the edge of the basin
where slopes change. The highest point is minus 2724 feet and the lowest
is minus 8566 feet.
Elevations were derived from Google Mars.