There is a small shop next to the station,
also a convenience store(Familymart) and Police box on the way,
you should ask about keep it possible or not when buy something or asking.
Although it may not be a policeman bc police box placed a rural area,
if you can get in, guess that you can talk to near another police box or police station by phone,
but at first say "This is not emergency call (like 911 in US/in Japan is 110)",
they are watching by livecam no worry.
Until climbing mouth :https://goo.gl/maps/cQP44FMchcP2
This is climbing mouth, https://goo.gl/maps/Y3JGnx3ZSsyhttps://goo.gl/maps/Kg825HVV8po
go up hard stairs(seems under 500m), and you can see the sign in vertical writing
"日本一の大杉(Nippon-ichi no Osugi = No.1 largest Sugi-tree in Japan)".
If local passengers who also getting off with you,
their family or friends may come to pick them up with a car,
so you should think and try hitchhiking as well.
Seems a taxi waiting but it is may not always, so can not expect much.
It seems to be about 1.5 km in total, but it is not clever to bring up luggage when thinking of the final stairs.