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The coloured areas on this map indicate the coastal regions that flooded after the 1883 Krakatoa volcanic eruption. Krakatoa is shown in the centre of the Sunda Strait, between Sumatra and Java.

Map of Lepong (Leupung) in Aceh, northern Sumatra, surrounded by paddy fields and mountains. There are handwritten corrections and additions in red ink, and an inset map of the mouth of the Kroeng Lepong river showing it four years earlier in 1879.

The shaded area on this map is where volcanic ash fell from the 1883 eruption of Krakatoa (Sunda Strait between Sumatra and Java). Red figures record the thickness of the ash in millimetres; black figures are distance from the eruption in kilometres.

The Aceh War (1873–1904) between the Sultanate of Aceh and Dutch colonists is highlighted on this map of Groot-Atjeh in 1876. Flag symbols mark the locations of Dutch military posts, and some villages are described as ‘verbrande [burnt]’.

This map highlights the judicial system in the Dutch East Indies (‘Nederlands-Indië’) in the late 19th century. Different colours indicate the areas of authority of the different courts of law. There is an inset map of Java.

This map is concerned with trade in the Dutch East Indies, highlighting useful resources such as maritime routes, railways, telegraph lines and offices, coast and harbour lights, offices of officials, areas that apply tolls and duties etc.

A map charting the effects of the 1883 Krakatoa volcanic eruption: a red circle where the eruption was heard; black lines showing the hourly spread of the resulting waves; and a list of ships on which ash fell, or that encountered pumice (with date).

Nine maps of the effects of the 1883 Krakatoa volcanic eruption, including on Rakata Island itself, and Calmeyer Island (formed by the eruption). Other maps use brown shading to show the flooding of nearby islands and settlements by ensuing tsunamis.

The Aceh War (1873–1904) between the Sultanate of Aceh and Dutch colonists is highlighted on this map of Groot-Atjeh in 1876. Flag symbols mark the locations of Dutch troops, while a red line records the route marched by ‘agitating troops’ in 1875-6.