The Cayos Arcas is a chain of three tiny sand cays and an accompanying reef system in the Gulf of Mexico, 128 kilometres from the mainland. It is located approximately 130 kilometres from the mainland, west of Campeche. Their aggregate land area is 22.8 hectares. They belong to the municipality of Campeche in the state of Campeche.
The main island is Cayo del Centro, with an area of 13.7 hectares, which is scantily covered with grass. Bushes and several clumps of palms are also present. A pair of lighted range beacons stand on the cay.
Wikipedia https://en.wikipedia.org/wiki/Cayos_Arcas
Coordinates 20°12'36" N -91°58'48" E