South Pole, Antarctica (Google Maps ⧉, OpenStreetMap ⧉)

"…but was it sinking, or rising? And which direction did the sun indicate, anyway, when you were at the South Pole?"

"*  South Pole, Mauna Loa: C. D. Keeling, T. P. Whorf, and the Carbon Dioxide Research Group, Scripps Institute of Oceanography (SIO), University of California, La Jolla, CA 92093, U.S.A."