2 Benvenuto to GRASS

Figure 6: Spearfish, South Dakota (SD, USA)

In this section we are working with the Spearfish60 sample data set which we extracted into the GRASS database (see above). It is located in South Dakota (SD), USA (see figure 6). Most of the maps in the Spearfish60 dataset were generated in the 1980s, with some updates and additions over the last few years. The dataset is comprised of raster and vector maps of two 1:24000 USGS quadrangles (quadrangles ``Spearfish'' and ``Deadwood North'') and covers a major part of the Black Hills National Forest (Mount Rushmore).