 Illa Grossa with visible lighthouse | |
  Illa Grossa Location in Spain | |
| Geography | |
|---|---|
| Coordinates | 39°53′50″N 0°41′00″E / 39.89722°N 0.68333°E |
| Archipelago | Columbretes Islands |
| Adjacent to | Mediterranean Sea |
| Area | 0.14 km2 (0.054 sq mi) |
| Administration | |
Illa Grossa, ("Large Island" in Valencian)[1][2] is the largest island of the Columbretes archipelago of Spain, located in the Mediterranean Sea. It has a surface area of 14 hectares, or 0.05 square miles. It sits 60 km from Costa del Azahar.[1] The island has experienced a rifting process since the lower Miocene,[3] and is characterized by a significant presence of basalt materials.[4] It is the result of a number of craters forming a chain, and its shape resembles the halve of an ellipse with an average diameter of 1 km, with two main elevations. The island's highest point, located in the northern section, is called mount Colibrí[5] or Colibre.[2] Along with the rest of the islands of the archipelago, it belongs to the Columbretes Islands Natural Reserve.
- ^ a b "Geological section, Volume 65". Boletín de la Real Sociedad Española de Historia Natural: Órgano del Instituto de Ciencias Naturales José de Acosta. 1967. pp. 27–29.
- ^ a b Anuario estadístico de España. Instituto Nacional de Estadística. 1859. p. 67.
- ^ Boletín Geológico y Minero. 1991.
- ^ "Mar Mediterráneo". VVAA. Empresa Nacional Adaro de Investigaciones Mineras. 1971. p. 209.
- ^ Ruis Iñiguez, Ignacio (1935). La tierra y sus aguas ocultas. Reglas para descubrir manantiales (2008 ed.). Valladolid: MAXTOR. p. 101. ISBN 9788497614276.