I am looking to create terrain hillshading for my maps that contain a small region of the US. I intend to show about eight to ten states at a time (at about ~1:5,000,000 scale).
It has been some time since I created a map, but if I recall correctly, I believe the options are to either use imagery or a DEM.
Either way I still face a problem:
- The raster data I have found (Natural Earth) is not of sufficient quality.
- I cannot find a bulk download option anywhere for open source DEM data or imagery such as the SRTM.
An example of the what I am trying to accomplish is below