 After the broad expanse of ice at over , the Tahoma Glacier narrows as it descends around the rocky Glacier Island, a sub-peak of Rainier once fully encircled by both the South Tahoma and Tahoma Glaciers.Leaving the bottleneck in the glacier, the glacier splits; the larger, longer northern arm continues flowing west-southwest and terminates at around .The southern arm flows south towards the arm of the South Tahoma Glacier, but this arm terminates before it rejoins the South Tahoma at .