Dallas Reef

7°38′20″N 113°48′0″E / 7.63889°N 113.80000°E / 7.63889; 113.80000ArchipelagoSpratly IslandsLength7 km (4.3 mi)Width2 km (1.2 mi)Administration

Malaysia

StateSabahClaimed by

China

CitySansha, Hainan

Malaysia

StateSabah

Taiwan

MunicipalityCijin, Kaohsiung

Vietnam

DistrictTruong Sa, Khanh Hoa

Dallas Reef (7°38′N 113°48′E / 7.633°N 113.800°E / 7.633; 113.800), also known as Malay: Terumbu Laya; Vietnamese: đá Suối Cát; Mandarin Chinese: 光星礁; pinyin: Guāngxīng Jiāo; Rajah Matanda Reef (Filipino: Bahura ng Rajah Matanda), lies on the SW extremity of Dangerous Ground (South China Sea) in the Spratly Islands of the South China Sea.^[1]

It is approximately 7 km long and 2 km wide, and encloses a lagoon ~15m deep. It is 9 km west of Ardasier Reef, and 26 km north of Swallow Reef.

As with all of the Spratly Islands, the ownership of the atoll is disputed. It is controlled by Malaysia, and claimed by the People's Republic of China, the Republic of China (Taiwan) and Vietnam.^[2] The Filipino(Tagalog) name is named after precolonial Philippine ruler of Rajahnate of Maynila, Rajah Matanda.

References

^ http://www.oceangrafix.com/chart/zoom?chart=93047 SW Dangerous Ground
^ Dallas Reef is not claimed by the Philippines – it lies outside of the Kalayaan Island Group claimed area.

Physical geography of Sabah

Coastal features

Bays	Agal Brunei Cowie Darvel Kimanis Labuk Marchesa Marudu Padas Paitan Sandakan Sandy (Pasir Putih) Sepanggar Schomburgk Tambak
Capes	Tip of Borneo
Islands	List of islands disputed Spratly Islands Laya Layang Layang Mantanani Peninjau Siput Ubi
Peninsulas	Bengkoka Dent Karambunai Klias Kudat Sandakan Semporna
Straits	Balabac

Interior and water features

Caves

Hills

Skull (Bukit Tengkorak)

Mountains

Mountain ranges

Rivers

Main rivers	Danum Kinabatangan Kolopis Padas Paitan Papar Sugut Tuaran
Tributaries	Kibunut Labuk Liwagu Pandasan Pegalan Sibuku

Valleys

Kundasang

Volcanic fields

Waterfalls

Spratly Islands

Confrontations

Regions

Occupied features

Brunei	Louisa Reef
China	Cuarteron Reef Fiery Cross Reef Gaven Reefs Hughes Reef Johnson South Reef Mischief Reef Subi Reef
Malaysia	Ardasier Reef Dallas Reef Erica Reef Investigator Shoal Mariveles Reef Swallow Reef
Philippines	Commodore Reef Flat Island Irving Reef Lankiam Cay Loaita Cay Loaita Island Nanshan Island Northeast Cay Second Thomas Shoal Thitu Island West York Island
Taiwan	Taiping Island Zhongzhou Reef
Vietnam	Alison Reef Amboyna Cay Barque Canada Reef Bombay Castle Central London Reef Collins Reef Cornwallis South Reef Discovery Great Reef East London Reef Grierson Reef Ladd Reef Lansdowne Reef Namyit Island Pearson Reef Petley Reef Sand Cay Sin Cowe Island South Reef Southwest Cay Spratly Island Tennent Reef West London Reef

Unoccupied features

South China Sea

Pratas Island

Pratas Island
North Vereker Bank
South Vereker Bank

Paracel Islands

Amphitrite Group	Rocky Island Tree Island West Sand Woody Island Qilian Yu
Crescent Group	Money Island Robert Island Yagong Island
Other features	Bombay Reef Triton Island

Northeastern SCS

Spratly Islands

Dangerous
Ground

NW	North Danger Reef Northeast Cay Southwest Cay Thitu Reefs Thitu Island Subi Reef Loaita Bank Lankiam Cay Loaita Cay Loaita Island Tizard Bank Gaven Reefs Namyit Island Sand Cay Taiping Island Zhongzhou Reef NNW Irving Reef West York Island WNW Western Reef
NE	Flat Island Nanshan Island Reed Tablemount Third Thomas Shoal
SE	Commodore Reef First Thomas Shoal Mischief Reef Sabina Shoal Second Thomas Shoal
SW	Union Banks Collins Reef Hughes Reef Johnson South Reef Sin Cowe Island Ardasier Reef Cornwallis South Reef Dallas Reef Erica Reef Investigator Shoal Mariveles Reef