Guess? Where have you been all these months, Mark?

I am very confused by today’s installment:

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Yes, Mark, he wanted to show the world that The Yeti was more than mere fiction.  Why are you so slow sometimes?  And Genie, do you always carry around a first edition of YETI by Harvey Camel, PhD?

And if this was to be his Penultimate adventure, then what was he planning as a finish?

…again, shouldn’t someone, anyone be digging?