Illa Grossa

Illa Grossa, ("Large Island" in Valencian) 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. The island has experienced a rifting process since the lower Miocene, and is characterized by a significant presence of basalt materials. 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 or Colibre. Along with the rest of the islands of the archipelago, it belongs to the Columbretes Islands Natural Reserve.