Named after Brian Mason of the Department of Mineral Sciences, Smithsonian Institution, Washington, DC, who examined and classified meteorites collected by United States Antarctic Project (USAP) field parties directed by W.A.

Named after Roberta Score, manager of the Antarctic Meteorite Laboratory, NASA Johnson Space Center, Houston, TX, 1978-96; member of ANSMET meteorite search teams in several areas of the Transantarctic Mountains, 1984-85 and 1988-89 field seasons; supervisor, Crary Science and Engineering Center (McMurdo), 1996-2001.

The ridge is 4 nautical miles (7.4 km; 4.6 mi) long and forms the east end of Meteorite Hills.

Named after Marilyn Lindstrom, curator of Antarctic meteorites at the NASA Johnson Space Center, Houston, Texas, for many years up to 2000.

The rock marks the north margin of ice-covered Access Slope, a route through the Circle Icefall of upper Darwin Glacier.