Prism Ridge is a small ridge with bare rock outcroppings located just north of Haskell Glacier

Haskell Glacier

Haskell Glacier is a small glacier descending from Christoffersen Heights and draining west between Prism Ridge and Forbidden Rocks, in the Jones Mountains. Mapped by the University of Minnesota Jones Mountains Party, 1960-61. Named by Advisory Committee on Antarctic Names for Lieutenant Hugh B....

 and 2 nautical miles (3.7 km) south-southwest of Bonnabeau Dome

Bonnabeau Dome

Bonnabeau Dome is a prominent ice-covered dome mountain rising on the west side of Gopher Glacier, west of the similar-appearing Anderson Dome, in the Jones Mountains. It was mapped by the University of Minnesota Jones Mountains Party, 1960–61, and named by them for Dr. Raymond C. Bonnabeau, Jr.,...

, in the Jones Mountains

Jones Mountains

The Jones Mountains are an isolated group of mountains, trending generally east-west for 43 km , situated on the Eights Coast, Ellsworth Land, about 80 km south of Dustin Island...

. Mapped and named by the University of Minnesota

University of Minnesota

The University of Minnesota, Twin Cities is a public research university located in Minneapolis and St. Paul, Minnesota, United States. It is the oldest and largest part of the University of Minnesota system and has the fourth-largest main campus student body in the United States, with 52,557...

-Jones Mountains Party, 1960-61. They found a large block of ice in the shape of a square prism standing as an isolated feature at the south end of this ridge.