Twitcher 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...

, 4 miles (6 km) long, which flows east from the Salvesen Range

Salvesen Range

The Salvesen Mountains or Salvesen Range is a mountain range on the southern tip of South Georgia, rising to a maximum elevation of . They were created 127 million years ago and are made mainly from granite. The Cretaceous granite is pretruded into the Jurassic basaltic lavas and dolerite dykes....

 to the east coast of South Georgia, immediately south of Herz Glacier

Herz Glacier

Herz Glacier is a glacier flowing southeast from the vicinity of Mount Paterson to the east coast of South Georgia. Named by the German Antarctic Expedition under Wilhelm Filchner, 1911-12....

 and Iris Bay

Iris Bay

Iris Bay is a small bay immediately south of Muller Point at the east end of South Georgia, lying 6 miles northwest of Cape Vahsel, along the embayment between Cape Vahsel and Cape Charlotte. The name Sandwich Bay, for John Montagu, 4th Earl of Sandwich, was given to the whole embayment between...

. The glacier was surveyed in 1951-52 by the SGS. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) for John Montagu

John Montagu

John Montagu may refer to:* John Montagu, 3rd Earl of Salisbury * John Montagu , Master of Trinity College, Cambridge, 1683–1699* John Montagu, 2nd Duke of Montagu...

, fourth Earl of Sandwich, First Lord of the Admiralty, 1771–82, who was popularly known as "Jemmy Twitcher."