I thought North and South Marshall were both part of the larger Mount Marshall. That is what it shows on the topo map. I don't see a Mount Marshall to the east. Can you elaborate? I have been up there a number of times, so I am pretty familiar if you can explain further.
"After the first glass, you see things as you wish they were. After the second, you see things as they are not. Finally, you see things as they really are, which is the most horrible thing in the world."
--Oscar Wilde on Absinthe