My GrandPa has this land boundary controversy since1970's.
what I understand is our neighbor who used to be rich managed to bribe land officers in Nyeri office. This resulted to the boundary being compromised for that long. The case has been ongoing without a predictable time when it will ever be concluded.
Conclusion of that case will be the best satisfaction to my Grandfather. He is 86yrs and of late kind of poor health. The best I can do is take responsibility hoping I will succeed.
Where should I start?

Provincial administration had been involved to DO level.
The problem seems land surveyor department in Nyeri.
How can you explain differing boundary line from same office while done by different surveyors over the years. Mind you the map is always the same. I'm enquiring how to get independent professional services from land's office.

There is corruption but land offices is extreme. I do hope those responsible are aware.
But sounds more than terrible a case has been dragging in since 1970's even before many if us were born and no end on sight