I took a few minutes and installed GE. The deepest point of the last valley before the runway is - also according to GE - around 200 m. Deepest point situated around 1700 m from the rwy.
As Alice pointed out, it makes wonder, from where MAK did get it's terrain profile?
Only a fool would use a radalt on an NPA unless it was a dire emergency.
Or stressed like hell. E. Klich said, that the PIC was "programmed for landing".
Another point. During landing, they should be counting down their RA height starting from 60 m.
Still many things unclear.
The transcript from the voice recorder will - maybe - be published next week.
Arrakis