Kolhumadulu Atoll (also known as Thaa Atoll) is an administrative division of the Maldives. It corresponds to the natural atoll of the same name. The ancient name of the island was Kolhumaduva during the time of King Koimala who united all atolls of the Maldives under one kingdom for the first time.

This article includes a list of general references, but it lacks sufficient corresponding inline citations. (July 2014)

Quick Facts Thaa Atoll, Country ...

Thaa Atoll
atoll of the Maldives
Location of Thaa in Maldives
Country	Maldives
Corresponding geographic atoll(s)	Kolhumadulu
Location	3° 34' N and 2° 11' N
Capital	Veymandoo
Government
• Atoll Chief	-
Population
• Total	8,901
Letter code	N
Dhivehi letter code	Th (ތ)
• Number of islands	66
• Inhabited islands	Burunee * Dhiyamingili * Gaadhiffushi * Guraidhoo * Hirilandhoo * Kandoodhoo * Kinbidhoo * Madifushi * Omadhoo * Thimarafushi * Vandhoo * Veymandoo * Vilufushi
• Uninhabited islands	Bodufinolhu, Bodurehaa, Dhiffushi, Dhonanfushi, Dhururehaa, Ekuruffushi, Elaa, Fenfushi, Fenmeerufushi, Fonaddoo, Fondhoo, Fonidhaani, Fushi, Gaalee, Gaathurehaa, Hathifushi, Hiriyanfushi, Hodelifushi, Hulhiyanfushi, Kaaddoo, , Kadufushi, Kafidhoo, Kakolhas, Kalhudheyfushi, Kalhufahalafushi, Kandaru, Kani, Kanimeedhoo, Kolhufushi-1, Kolhufushi-2, Kudadhoo, Kudakaaddoo, Kudakibidhoo, Kurandhuvaru, Kuredhifushi, Lhavaddoo, Maagulhi, Maalefushi, Mathidhoo, Medhafushi, Olhudhiyafushi, Olhufushi, Olhufushi-finolhu, Olhugiri, Ruhththibirah, Thinkolhufushi, Ufuriyaa, Usfushi, Vanbadhi
Resort islands(*), airports(¤) and industrial islands are also considered uninhabited.

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Traditionally, Maldivians call this atoll simply Kolhumadulu, without adding the word atholhu at the end. Thaa is the code letters assigned to the atoll and is sometimes used by tourists to refer to the atoll itself.

The waters surrounding this atoll are good fishing areas and some islands house fish processing plants.^{[citation needed]}

Kolhumadulu Atoll comprises thirteen inhabitant islands. They are; Burunee, Vilufushi, Madifushi, Dhiyamigili, Guraidhoo, Kadoodhoo, Vandhoo, Hirilandhoo, Gaadhifushi, Thimarafushi, Veymandoo, Kinbidhoo, and Omadhoo. There are important Buddhist archaeological remains in the island of Kinbidhoo, including a large ruined stupa. These were explored by the late Muhammad Ismail Didi. A report on the survey was published in the book Divehi Tārīkhah Au Alikameh.

The Atoll is the 21st Largest Atoll In the World. The shapes of the atoll closely resembles the shape of its southern neighbor Haddunmathi Atoll, except for the projection of the reef at the NE corner of Haddunmathi Atoll (Isdhū Muli). This Atoll marks the end of the east–west divide of the Maldives Atolls between Kaashidhoo Kandu and Kudahuvadhoo Kandu.

Some islands in Kolhumadulu Atoll were severely affected by the 2004 Tsunami. Particularly Vilufushi, The island faced the most casualties out of all the other islands in the Maldives. The 1900 Citizens of the island were displaced to Burunee in the same atoll.^[1] Kinbidhoo was also severely affected by the tsunami.