Gruta das Cinco Ribeiras

*Gruta das Cinco Ribeiras*
**Cave of Cinco Ribeiras**
Gruta das Cinco Ribeiras; Cave of Cinco Ribeiras
Location	Terceira Island (Azores), Portugal
Coordinates	38°40.5′N 27°19.85′W
Geology	Lava tube, Basalt
Access	Maritime access by boat

The Gruta das Cinco Ribeiras (literally the Cave of Cinco Ribeiras) is a cave situated in the southwest coast of Terceira, located in the civil parish of Cinco Ribeiras, municipality of Angra do Heroísmo, in the Portuguese archipelago of the Azores.

The cave is situated along the coast near the Porto das Cinco Ribeiras and the surrounding bay, primarily accessible by boat from along the coast.

The geological formation is directly related with the former-volcano of Serra de Santa Bárbara, and is characterized by high areals, lava flows and pyroclasts that created perfect stratifications of geological materials. It is associated specifically with a lava tube and arches created during the eruptions of the Santa Bárbara volcano. The morphology of the location allowed the formation of subaquatic caves popular with divers. Although there are various depths associated with the site, its maximum depth extent is 16 metres (52 ft), resulting in several small galleries and interspersed by stone, cliffs and sandy shallows.

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Angra do Heroísmo
Civil parishes	Altares Cinco Ribeiras Doze Ribeiras Feteira Nossa Senhora da Conceição Porto Judeu Posto Santo Raminho Ribeirinha Santa Bárbara Santa Luzia São Bartolomeu de Regatos São Bento São Mateus da Calheta São Pedro Sé Serreta Terra Chã Vila de São Sebastião
Natural landmarks	Algar do Carvão Bay of Angra Bay of Pontas Bay of Salga Bay of Refugo Cabras Islets Furna de Água Galerias da Feteira Gruta Brisa Azul Gruta das Agulhas Gruta das Cinco Ribeiras Gruta das Mercês Gruta do Zé Grande Gruta dos Ratões Lagoa do Negro Mata da Serreta Monte Brasil Parque de Campismo das Cinco Ribeiras Ponta do Queimado Porto das Cinco Ribeiras Prainha Serra da Ribeirinha Serra de Santa Bárbara Serra do Morião ou da Nasce Água Zona Balnear do Negrito
Man-made landmarks	Bettencourt Palace Cais da Alfândega Cais da Silveira Castle of Moinhos Cemetery of Anchors Church of São Mateus da Calheta Convent of São Gonçalo Duke of Terceira Garden Fort of the Açougue Fort of the Cavalas Fort of the Church of São Mateus da Calheta Fort of Greta Fort of Má Ferramenta Fort of the Maré Fort of Negrito Fort of Santo António do Monte Brasil Fort of São João Fort of São João Baptista Forte das Caninas Forte das Cinco Ribeiras Forte da Salga Forte de Santa Catarina das Mós Forte de Santo António Forte de São Fernando Forte de São Francisco Forte de São Sebastião Forte do Terreiro Forte do Zimbreiro Fortress of São Mateus da Calheta Reducto da Salga Miradouro da Amoreira Miradouro da Ponta do Queimado Miradouro da Serreta Miradouro das Veredas Miradouro do Pico das Cruzinhas Miradouro do Pico Matias Simão Municipal Palace/Hall of Angra do Heroísmo Parque Arqueológico Subaquático da Baía de Angra do Heroísmo Parque de Campismo das Cinco Ribeiras Parque Municipal do Relvão (Angra do Heroísmo) Porto das Cinco Ribeiras Redoubt of Dois Paus Redoubt of Três Paus Manor of Madre de Deus Sé Cathedral of Angra do Heroísmo
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