Guerrero Glacier is a glacier

Glacier

A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...

 about 7 nautical miles (13 km) long, draining from the southeast slopes of Mount Havener

Mount Havener

Mount Havener is a mountain rising to 2,800 m directly at the head of Guerrero Glacier, in Doyran Heights, the Sentinel Range, Ellsworth Mountains in Antarctica. First mapped by United States Geological Survey from surveys and U.S. Navy air photos, 1957-59. Named by Advisory Committee on...

 to the south side of Taylor Spur

Taylor Spur

Taylor Spur is a wedge-shaped spur marking the north side of the terminus of Guerrero Glacier, on the east side of the Sentinel Range, Ellsworth Mountains. First mapped by United States Geological Survey from surveys and U.S. Navy air photos, 1957-59. Named by Advisory Committee on Antarctic...

, in the southeast part of the Sentinel Range

Sentinel Range

The Sentinel Range is a major mountain range situated northward of Minnesota Glacier and forming the northern half of the Ellsworth Mountains in Antarctica. The range trends NNW-SSE for about and is 24 to 48 km wide...

, Ellsworth Mountains

Ellsworth Mountains

The Ellsworth Mountains are the highest mountain ranges in Antarctica, forming a long and wide chain of mountains in a north to south configuration on the western margin of the Ronne Ice Shelf. They are bisected by Minnesota Glacier to form the northern Sentinel Range and the southern Heritage...

. First mapped by United States Geological Survey

United States Geological Survey

The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...

 (USGS) from surveys and U.S. Navy air photos, 1957-59. Named by Advisory Committee on Antarctic Names

Advisory Committee on Antarctic Names

The Advisory Committee on Antarctic Names is an advisory committee of the United States Board on Geographic Names responsible for recommending names for features in Antarctica...

 (US-ACAN) for John F. Guerrero, meteorologist at South Pole Station in 1957.