Widgett of Need Coffee interviewed a manager with Wells Fargo and confirmed that there are two ATMs at McMurdo Station in Antarctica. David Parker said that they were installed around the year 2000 and are largely maintained by the staff because Wells Fargo can only visit once every two years:
We do send a vendor down about once every two years to do some preventative hardware maintenance on both of the ATMs, to make sure they're operational, change out the belts and that kind of stuff, provide new cartridges…anything else hardware-wise that we would need to make sure that it runs. But as you can imagine getting somebody down there is quite a feat.
Link via Ace of Spades HQ | Photo: Need Coffee
I'm at McMurdo Station for the summer season, contracted to work in the galley. We use US Dollars on station, and Wells Fargo doesn't charge a fee to use the ATMs (though your own bank may charge you). There is a station store (with things like gifts, clothes, snacks, and alcohol), two bars, and a coffee shop as well. Haircuts are free though :)