Question: What is the name of the capital located at in Cumberland East Bay that Mount Duse is surmounting ?

Context paragraphs:
King Edward Point: King Edward Point (also known as KEP) is the capital of South Georgia and the South Sandwich Islands, on the northeastern coast of the island of South Georgia.  It is located at in Cumberland East Bay.  It is sometimes confusingly referred to as Grytviken, which is the site of the disused whaling station, nearby at the head of King Edward Cove.

King Edward Cove: King Edward Cove is a sheltered cove immediately southwest of Mount Duse, in the west side of Cumberland East Bay, South Georgia.  This cove, frequented by early sealers at South Georgia, was charted by the Swedish Antarctic Expedition, 1901–04, under Otto Nordenskiöld.  It was named in about 1906 for King Edward VII of the United Kingdom.

Junction Valley: Junction Valley ( ) is a valley sloping eastward from Echo Pass to Hestesletten on the west side of Cumberland East Bay, South Georgia.  The name Junction Valley was originally applied by the Swedish Antarctic Expedition under Otto Nordenskiöld, 1901–04, to a valley joining Cumberland East Bay with Cumberland West Bay.  The summit of this valley was later named Echo Pass.  The original name has therefore been restricted to the eastern valley, and Sphagnum Valley has been applied to the western part.

Maiviken: Maiviken is a cove at the north end of Thatcher Peninsula between Cumberland West Bay and Cumberland East Bay, South Georgia.  It was charted by the Swedish Antarctic Expedition, 1901–04, under Otto Nordenskjöld, and named "Majviken" (May Cove) after May Day, 1902, the day on which the cove was entered.  Over the years, the Norwegian spelling Maiviken has become established for the cove.

Thatcher Peninsula: Thatcher Peninsula ( ) is a mountainous peninsula in north-central South Georgia terminating to the north in Mai Point, rising between Cumberland West Bay to the west, and Cumberland East Bay and Moraine Fjord to the east; bounded to the southwest and south by Lyell Glacier and Hamberg Glacier.  King Edward Cove on the east side of the peninsula is the site of the British Antarctic Survey (BAS) Grytviken station and the disused whaling station of the same name.

Grytviken: Grytviken is a settlement on the island of South Georgia, part of a British Overseas Territory in the South Atlantic.  The settlement's name is Swedish in origin, meaning "the Pot Bay".  The name was coined in 1902 by the Swedish Antarctic Expedition and documented by the Swedish surveyor Johan Gunnar Andersson, after the expedition found old English try pots used to render seal oil at the site.  It is the best harbour on the island, consisting of a bay (King Edward Cove) within a bay (Cumberland East Bay).  The site is quite sheltered, provides a substantial area of flat land suitable for building, and has a good supply of fresh water.

Sappho Point: Sappho Point ( ) is a headland which marks the west side of the entrance to Cumberland East Bay, on the north coast of South Georgia.  Probably first sighted by the British expedition under Cook which explored the north coast of South Georgia in 1775.  Named for HMS Sappho, British ship used in charting portions of Cumberland Bay in 1906.

Mount Duse: Mount Duse ( ) is a conspicuous mountain, 505 m high, surmounting King Edward Point on the west side of Cumberland East Bay, South Georgia.  It was charted in 1902 by Lieutenant S.A. Duse, cartographer of the Swedish Antarctic Expedition, 1901–04, for whom it is named.

Cumberland East Bay: Cumberland East Bay is a bay forming the eastern arm of Cumberland Bay, South Georgia.  It is entered between Sappho Point and Barff Point, where it is nearly 3 mi wide, and extends 8 mi in a southeast direction.  This feature was surveyed by the Swedish Antarctic Expedition, 1901–04, who named it "South Bay".  It was remapped during 1926–29 by Discovery Investigations personnel and renamed "East Cumberland Bay", which is more descriptive of its geographic position.  The shortened form "East Bay" was simultaneously used.  Following the South Georgia Survey, 1951–52, the UK Antarctic Place-Names Committee proposed that the name be altered to Cumberland East Bay and that all other names be rejected.  This change brings together information about the whole of Cumberland Bay in one place in indexes, and will avoid confusion with East Bay in Prince Olav Harbour, South Georgia.

Mount Hodges: Mount Hodges ( ) is a mountain, 605 m high, standing 1 nmi west of Mount Duse, close northwest of the head of King Edward Cove, Cumberland East Bay, South Georgia.  It was first roughly surveyed by the Swedish Antarctic Expedition, 1901–04, under Otto Nordenskjöld, appearing as "Moldaenke Berg" on a 1907 map by A. Szielasko, but the name has not survived on later general charts of this area.  The name "Mount Hodges" appears to have been applied some years later and is now well established.  It was probably named for Captain M.H. Hodges, Royal Navy, of the "Sappho", who visited and mapped portions of Cumberland Bay in 1906.

Supporting paragraphs: Mount Duse King Edward Point
Answer: King Edward Point