PMDG 777 - ND Terrain function

On the navigation display, what do the two numbers (121 & 059) at the bottom-ish left represent? Why is the larger number in red, not green?

As you can see, there is a terrain hazard to my 10 oclock.

  1. Upper value of the TERR thing is altitude of the highest object in the selected range of the map
  2. Lower value is the altitude of the lowest object in the selected range of the map
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