Rennick Glacier is broad glacier, nearly 200 nautical miles long, which is one of the largest in Antarctica. It rises on the polar plateau westward of Mesa Range and is 20 to 30 nautical miles wide, narrowing to 10 nautical miles near the coast. It takes its name from Rennick Bay where the glacier reaches the sea.

The Outback Nunataks are a series of bare rock nunataks and mountains which are distributed over an area about 40 nautical miles long by 20 nautical miles wide. The group lies south of Emlen Peaks of the Usarp Mountains and west of Monument Nunataks and upper Rennick Glacier, adjacent to the featureless interior plateau.