Formerly a Spanish colony, Equatorial Guinea first acquired
provincial status and then the status of an autonomous
region. Finally, full independence was gained in 1968, and
in 1973 the two former provinces of Río Muni and the
islands of Bioko and Annabón became a unitary state.
Mapping of the mainland was undertaken by the Instituto
Geográfico Nacional de España (IGNE) and by the Spanish
Servicio Geográfico del Ejército, and a series of 1:100,000
scale monochrome planimetric maps was produced in the late
1950s. A four-sheet, 1:200,000 scale Carta itineraria de la
Guinea Continental Española on the Gauss projection, was
derived from these and published in color in 1959. Earlier
multi-coloured maps produced by Spain in the 1950s
included a 1:100,000 scale map of Fernando Poo (now Bioko).
In 1979, IGNE made an agreement with the government
of Equatorial Guinea to continue to support the mapping
of the country. In the same year a 1:400,000 scale general
map was published, with an inset map of Bioko, and a separate
1:100,000 scale map of Bioko. These two sheets are in
black and white and the mainland is uncontoured, while the
Bioko sheet has 100 m contours. The projection is Gauss.
The earlier 1:100,000 scale cover of the continental area is being revised
using Side-Looking Airborne Radar (SLAR) to provide
The most recent available sheets comprise a 1:10,000 scale
color map of Annabón (Ambo) with shaded relief and 10 m
contours on UTM projection, 1980 reference system, and a
four-sheet, 1:50,000 scale topographic map of Bioco, with
100 m contours, also on the UTM projection. The best
general map to show the whole country is the Mapa general de la Republica de Guinea
Ecuatorial 1:750,000, published by IGNE in 1983 on the
Mercator projection, Hayford International ellipsoid.
The topographic mapping authority in Equatorial Guinea is
the Servicio Geográfico at Malabo, Bioko.
Soviet military topographic mapping for Equatorial Guinea exists at the following scales: 1:1,000,000 (3 sheets, complete coverage, published 1969-1986);
1:500,000 (4 sheets, complete coverage, published 1982-1985) and 1:200,000 (1 sheet, partial coverage, published in 1982). These products are available
in print, digital raster and digital vector GIS formats from East View Geospatial.
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