CORUMBA, a town and river port of Brazil on the west bank of the Paraguay river, 1,986 m. above Buenos Aires and 486 m. above the Paraguayan frontier. Population (1920) Corumba is a fortified frontier post, has the large Ladario naval arsenal, where small river boats are built and repaired, and is the commercial entrepot of the State of Matto Grosso. Although the climate is extremely hot, the neighbouring country has many large cattle farms. Steamers cross the river to Porto Esperanca where connection is made with the railway leading to Sao Paulo ; and steam launches cross lake Caceres to the Bolivian town of Puerto Suarez.