Geography
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 most prominent cay is Low Cay, in the southwestern atoll. It is 300 m (330 yd) long and 40 m (44 yd) wide (about 1 ha/2.5 acres), no more than 2 m (6.6 ft) high, and barren. It is composed of broken coral, driftwood, and sand. The light beacon on Low Cay is a 21 m (69 ft) metal tower, painted white with a red top. It emits a focal plane beam of light as two white flashes of light every 15 seconds. The beacon was erected in 1982, and reconstructed by the Colombian Ministry of Defence in February 2008. It is currently maintained by the Colombian Navy, and overseen by the state's Maritime Authority.
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