How do I make random ground terrain?

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I am a nobody

There might be other ways to do it, but I use this technique: Carve your area into equal sized squares, then go into vertex mode and get a side view ( Shift-2, or Shift-3) then multi-select a bottom row of vertices and drag it up or down, then do this for all of the bottom rows only move them to give them either a rolling, or jagged look. Then switch to Shift-2 or Shift-3 ( whichever one you didn't use the first time ) and repeat the technique, then your ground should be randomized .

But if you make an area larger than the Default JED grid you tend to get HOM's