Valles Marineris on Mars is 8km deep. How high would the mean surface
pressure of Mars have to be to have a surface pressure of 75kPa at the
base of Valles Marineris?

I'm wondering about the viability of planets like Larry Niven's
Canyon.

--
Chris

      __o          "All I was trying to do was get home from work."
    _`\<,_           -Rosa Parks
___(*)/_(*)____.___o____..___..o...________ooO..._____________________
Christopher Sean Hilton                    [chris/at/vindaloo/dot/com]