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Isla Calero

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Isla Calero

Isla Calero (English: Calero Island) is the largest island in Costa Rica, as well as along the San Juan River, which marks the border between Nicaragua and Costa Rica. The island lies between the San Juan (to the north and west), the Río Colorado of Costa Rica (to the south and southeast), and the C

aribbean Sea (to the east and northeast). The entire island has an area of 151.6 km2 (58.5 sq mi). Isla Calero lies within the undisputed territory of Costa Rica. In November 2010, Isla Portillos, an island adjacent to the northern tip of Isla Calero, an ecological preserve, became the focus of a dispute and extensive media coverage when Nicaraguan troops occupied it. At that time, a territorial dispute between the two Central American nations dating back to 1850 resurfaced over an area about 3 km in length on Isla Portillos, alternatively identified by the Nicaraguans as Harbour Head Island. Nicaragua had shown this part to be Costa Rican on all of its own maps for the previous half-century, as the border was defined by three historic documents: the Cañas–Jerez Treaty, the Cleveland Award, and the Alexander Award issued by E.P. Alexander, who acted as an arbitrator between the two countries...

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