Trinidad (Spanish: "Trinity") is the larger and more populous of the two major islands and numerous landforms which make up the island nation of Trinidad and Tobago. The island lies 11 km (6.8 mi) off the northeastern coast of Venezuela and sits on the continental shelf of South America. Though part of the South American continent, from a socio-economic standpoint it is often referred to as the southernmost island in the Caribbean. With an area of 4,768 km2 (1,841 sq mi), it is also the sixth largest in the West Indies.
Many believe the original name for the island in the Arawaks' language was "Iëre" which meant "Land of the Hummingbird". Some believe that "Iere" was actually a mispronunciation or corruption by early colonists of the Arawak word "Kairi" which simply means "Island". Christopher Columbus renamed it "La Isla de la Trinidad" ("The Island of the Trinity"), fulfilling a vow he had made before setting out on his third voyage of exploration.
Caribs and Arawaks lived in Trinidad long before Christopher Columbus encountered the islands on his third voyage in 1498. Tobago changed hands between the British, French, Dutch and Courlanders, but eventually ended up in British hands. Trinidad remained Spanish until 1797, but it was largely settled by French colonists from the French Caribbean, especially Martinique. In 1889 the two islands became a single British Crown colony. Trinidad and Tobago obtained self-governance in 1958 and independence from the United Kingdom in 1962.
Major landforms include the hills of the Northern, Central and Southern Ranges (Dinah ranges), the Caroni, Nariva and Oropouche Swamps, and the Caroni and Naparima Plains. Major river systems include the Caroni, North and South Oropouche and Ortoire Rivers. There are many other natural landforms such as beaches and waterfalls. Trinidad has two seasons per calendar year: the rainy season and the dry season. El Cerro del Aripo, at 940 metres (3,084 ft), is the highest point in Trinidad. It is part of the Aripo Massif and is located in the Northern Range on the island, northeast of the town of Arima.
Diversity is the status quo in Trinidad. It is sometimes known as a "rainbow island" or more fondly "a callaloo" (local dialect for a delicious dish prepared by blending a variety of ingredients). There is a wide range of ethnicity, religion, and culture. As of the 2011 Trinidad and Tobago Census, the population was 35.43% East Indian, 34.22% African, 7.66% Mixed - African and East Indian, and 15.16% Mixed - Other. Trinidad religion primarily centers round Roman Catholic, Anglican, other Christian denominations, Hindu and Muslim faiths. There are a minority of people who are followers of the Traditional African Religion, Yoruba/Trinidad Orisha, the Amerindian Religion, Jewish, Sikh, Jain, Taoist/Chinese folk religion/Confucianism, Buddhist, Bahá'í, and Zorastrian. Catholicism constitutes the largest religious denomination of the country. Some of the religious festivals are the Santa Rosa Festival, Christmas, Palm Sunday, Three Kings Day, Easter Monday, Good Friday, Easter, Spirtual Baptist Day, Ash Wednesday, Corpus Christi, St. Patrick's Day, St. Valentine's Day, Maundy Thursday, All Hallow's Eve, All Souls' Day, All Saints' Day, Eid al-Fitr, Eid al-Adha, Eid al-Ghadeer, Hosay, Ramadan, Divali, Ram Navami, Sita Navami, Vivaha Panchami, Maha Shivaratri, Navaratri, Teej, Karwa Chauth, Chhath Puja, Krishna Janmaashtami, Radhastami, Dussehra, Kartik Purnima, Guru Purnima, Vat Pournima, Tulsi Vivah, Makar Sankranti, Pitru Paksha, Thaipusam, Hanuman Jayanti, Mahalakshmi Vrata, Ganesh Chaturthi, Ganesh Jayanti, Sitalsasthi, Gowri Habba, Gangaur, Jivitputrika, Bhai Dooj, Raksha Bandhan, Gandhi Jayanti, Vasant Panchami, Godavari Pushkaram, Skanda Sashti, Mesha Sankranti, Pancha Ganapati, Phagwa, Chinese New Year, Vesak, Bodhi Day, Vaisakhi, Guru Nanak Gurpurab, Mahavir Jayanti, Hanukkah, Yom Kippur, Purim, Rosh Hashana, Gahambars, Ridván, and Enkutatash. There are also multiple festivals featuring the music of the Caribbean and the steelpan, which originated in Trinidad and is the country's national instrument. These festivals include the world-famous Carnival, J'ouvert, and Panorama, the national steel pan competition. Trinidad also has many public holidays, such as Indian Arrival Day, Emancipation Day, Independence Day, Republic Day, Labour Day, Boxing Day, New Year's Day, Divali, Phagwah, Eid al-Fitr, Corpus Christi, Good Friday, Easter, Easter Monday, Christmas, and Spiritual Baptist/Shouter Liberation Day. There are also places that can be visited that hold cultural significance, such as Mount Saint Benedict and the Temple in the Sea.
Further information: Natural history of Trinidad and Tobago
The island of Trinidad has a rich biodiversity (see the link above for more detail). The fauna is overwhelmingly of South American origin. There are about 100 species of mammals including the Guyanan red howler monkey, the collared peccary, the red brocket deer, the ocelot and dozens of bats. There are over 400 species of birds including the endemic Trinidad piping-guan. Reptiles are well represented, with about 92 recorded species including the largest species of snake in the world, the green anaconda, the spectacled caiman, and one of the largest lizards in the Americas, the green iguana. The largest of turtles (the leatherback turtle) nests on Trinidad's eastern and northern beaches. There are 37 recorded frogs, including the beautiful, little endemic El Tucuche golden tree frog, and the more widespread, huge introduced cane toad which has become a pest and is poisonous to animals that prey on it. About 43 species of freshwater fishes are known from Trinidad, including the well known guppy. It is estimated that there are at least 80,000 arthropods, inclusive of over 600 species of butterflies.
It is an industrial island with a diversified economy, based to a large extent on oil, natural gas, industry and agriculture. It is one of the leading gas-based export centres in the world, being the leading exporter of ammonia and methanol and among the top five exporters of liquefied natural gas. This has allowed Trinidad to capitalise on the biggest mineral reserves within its territories. It is an oil-rich country and stable economically.
The Venezuela Tertiary Basin is a subsidence basin formed between the Caribbean and South American plates, and is bounded on the north by the coast ranges of Venezuela and the Northern Range of Trinidad, and bounded on the south by the Guayana shield. This Guayana shield supplied fine-grained clastic sediments, which with the subsidence, formed a regional negative gravity anomaly and growth faults. Oil and gas discoveries from the Pliocene Moruga Group include Teak (1968), Samaan (1971), Poui (1972) and Galeota. These fields are mainly faulted anticline traps producing from depths of 1.2 km to 4.2 km subsea, with Teak possessing a hydrocarbon column almost 1 km thick.