Brown Bluff is a volcanic structure...

that erupted beneath a thick glacial ice cover, technically termed a “tuya.”

(Click image to enlarge.)

Descending hikers from a vigorous glacier hike on the south side of Brown Bluff.

Descending hikers from a vigorous glacier hike on the south side of Brown Bluff.

Kevin Clement, Shirley Metz and yours truly.  Shirley is the first woman to ski to the South Pole in 1982.

Kevin Clement, Shirley Metz and yours truly. Shirley is the first woman to ski to the South Pole in 1982.