evidence: Bajo Nuevo Bank is about 26 km (16 mi) long and 9 km (5.6 mi) wide. The satellite image shows two distinct atoll-like structures separated by a deep channel 1.4 km (0.87 mi) wide at its narrowest point. The larger southwestern reef complex measures 15.4 km (9.6 mi) northeast-southwest, and is up to 9.4 km (5.8 mi) wide, covering an area of about 100 km2 (39 sq mi). The reef partially dries on the southern and eastern sides. The smaller northeastern reef complex measures 10.5 km (6.5 mi) east-west and is up to 5.5 km (3.4 mi) wide, covering an area of 45 km2 (17 sq mi). The land area is minuscule by comparison. [...] The United States claim was made on 22 November 1869 by James W. Jennett under the provisions of the Guano Islands Act. Most claims made by the U.S. over the guano islands in this region were officially renounced in a treaty with Colombia, dated September 1972. However, Bajo Nuevo Bank was not mentioned in the treaty, and Article 7 of the treaty states that matters not specifically mentioned in the treaty are not subject to its terms. The United States considers the bank as an unincorporated unorganized territory.