MiKe Luedemann, DL2OE (pic aside), has been in the Argentinean & Chilean sides of Tierra del Fuego (Sub Antarctica) where he has been active for quite a while, in CW and SSB.
Mike did sign LU/DL2OE from 27 March through April 4th operating from the city of Tolhuin about 100 km north of Ushuaia (Isla Grande de Tierra del Fuego) WAP ARG-23.
From April 4 to 7 he was on the Chilean side of Tierra del Fuego and he operates as 
CE8/DL2OE from Karukinka Park, the southernmost National Park in Chile (locator FD55PU), WAP CHL-13.
DL2OE is actually ongoing his journey across South American, visiting few different Countries as planned. We are grateful to Mike for 2 WAP references from the Sub Antarctic southern tip of South America,
QSL Direct or via bureau to DL2OE