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Start Over Subject Glaciers Place Africa Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. DCW Drainage Features, Lines

Datasets Harvard University Public content
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a line coverage representing varous drainage feature types located throughout DCW (Digital Chart of the World) geographic coverag... National Imagery and Mapping Agency.

2. DCW Drainage Features, Polygons

Datasets Harvard University Public content
1992. National Imagery and Mapping Agency (now National Geospatial-Intelligence Agency). This datalayer is a polygon coverage representing drainage features located throughout DCW (Digital Chart of the World) geographic coverage as of 1... National Imagery and Mapping Agency.

3. VMap1 Land Ice Areas

Datasets Harvard University Public content
1995. National Geospatial-Intelligence Agency. This datalayer is a polygon coverage representing areas of land ice such as glaciers, snow and ice fields located throughout current VMap1 geograph...

4. VMap1 Landforms, Lines

Datasets Harvard University Public content
1995. National Geospatial-Intelligence Agency. This datalayer is a polyline coverage representing landform features such as Crevices (Crevasses), faultlines and ice cliffs located throughout cur...