Where does “Metsähallitus” come from?

Metsähallitus (Finnish) comes from Finnish hallitus, from Finnish hallita, from Finnish -ita, from Proto-Finnic -it'ak.

Ancestry of “Metsähallitus”, step by step

Step	Language	Word	Meaning
1	Finnish	hallitus	government, regime; cabinet; board, board of...
2	Finnish	hallita	to rule, govern, reign, administer, command; to...
3	Finnish	-ita	Forms instrumental verbs from nouns; Forms some...
4	Proto-Finnic	-it'ak	—