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This geological map of the district of Toboali (Bangka Island, east of Sumatra) uses colours to depict types of rocks, soils and minerals. Tin mining areas are also highlighted.

A navigation map of the Java Sea and Sunda Islands, with bathymetry (sea depth), maritime routes, shoals and reefs, and elevations (side views of terrestrial landmarks). Inset maps feature the bay at Batavia and the straits between the Sunda Islands.