Map of the Karimunjawa Islands (Java Sea) marked with the locations of shoals, reefs, anchor points and sea depth (bathymetry) to aid navigation; and with geological sites (recent rock/coral formation, basalt rock, schist rock and quartz).
Schets-Taalkaart van Sumatra
event1887
location_onIndonesia
This map is colour-coded to show the different languages and dialects spoken in Sumatra in the late 19th century.