By Agrael

Go to this site and download the wcs-client.

1. On the top left you can choose to create the map with rectangular selection or by coordinates; either way you will get a part of the map.
2. On bottom left, under choose a layer select ETOPO1 (bedrock)
3. Click download the data on bottom right.
4. Now you will need paint program; you should have it. Open it.
5. Load your downloaded file (should be a .tif) in it.
6. On bottom of paint, you will see a size (for example 1200x1800); copy them.
7. Open a .txt file.
8. Paste that size but without x and with space (for example will become 1200 1800).

Now you need the program Global Mapper; I have a pirated version with crack and I can send it.

1. Install and open it.
2. Go on top left and choose file then load your .tif.
3. If a message pops up, choose yes.
4. Now go again on file, then export, then find export elevation grid format.
5. Choose to export as bil/bip/bsq file.
6. Just press ok to the options pop up.
7. You will get 4 files, but you only need .bil; delete the others.
8. Rename .bil to .dat.
9. Now, BOTH .dat and .txt must have same name (for example Usa.txt and Usa.dat).
10. Put both files in data/scenarios/elevation maps; if doesn't exist, create it.
11. It's done. Go in game, scenarios, then create a map with eveation and choose your file.
12. Play a bit with the 4 values that appear, plus choose the width.

• now the trick for bigger maps; when choosing a rectangular selection on the site, make it more tall and less wide;
  so it looks like --> || and not --> |____|
• this way, when you choose width to 400 in game, tall part will be bigger than that