Rocha is a department in the east of Uruguay. Its capital is the city of Rocha. It border Maldonado Department to its west, Lavalleja Department to its northwest, Treinta y Tres Department to its north, while to its northeast Laguna Merín forms part of it border with Brazil and at the south end of the lake it also borders the southernmost end of Brazil, with the city of Chuy "shared" between both countries, the border passing through its main commercial avenue.
Rocha has natural beauties like Cabo Polonio, Valizas, Santa Teresa National Park. It is well known for its beach resorts, like Punta del Diablo or La Esmeralda, which swell with visitors during the summer holidays. Inland, the primary economy of Rocha is based on large cattle ranches.