https://www.scinexx.de/news/geowissen/ein-golden-spike-fuer-den-schneeball-erde/
Stern also said that the initial capability would be to land at nearside sites up to 75° latitude in either hemisphere, with longer stays and polar and farside site capabilities added later.
A more serious effort commenced with a workshop held at LPI in October 2013. I attended it, with a poster. It happened during one of those periodic US government shutdowns so some folk were only on screen. Lots of sites were discussed.
#moon #goldenspike