Those interested in the development of policy and strategy on 
extra-terrestial archaeology might like to read the paper on developing 
a sites and monuments record for Mars in the collection "Digging Holes 
in Popular Culture"  (a very mixed bag of a book, some thought-provoking 
papers, and some not).

Apologies to the author of the paper, and incomplete reference - my copy 
has been put on a dark shelf where I can't see it.

Best wishes to all,

Pat
-- 
Pat Reynolds