It is about 15 by 6 kilometers in size, with an area of 65 km composed mostly of lagoon. It is in the northern area lies Roncador Cay. It also has a small coral reef.
Roncador Bank.
History
Originally claimed by the United States under the Guano Islands Act of 1856, the atoll was ceded by the United States to Colombia on September 17, 1981, as the result of the Vásquez–Saccio Treaty (signed in 1972).
There are several dilapidated houses on it built by American troops during the Cuban Missile Crisis.
In 1894, the USS Kearsarge was shipwrecked on Roncador Bank.
Lighthouse
An old disused lighthouse is at its northern end. A new lighthouse has been operating since 1977.