1) To get to the Grove you need to find a tiny passage at given coordinates (see waypoints) - cross the railroad and proceed further. You can go on your motorbike there.
Here, among the trees you can find motorbikes which will never leave this area. It is their final parking lot.
2) In order to find cache, you must get to the motorbike with sidecar at given coordinates (see waypoints). Since it won't go anywhere from here, the readings from it's odometer is permanent, so just write them down. This is gonna be "A"
3) Now go to another motorbike and do the same thing. This is "B"
4) Now you have readings from the two odometers. All you need to calculate your final destination, which is not far away from here, is use the formula:
A+33172 - these digits are your latitude after 55 degrees
B+27222 - these digits are your longitude after 37 degrees
The container is inside small rotten stump. It's big enough, but there are only a logbook and a pencil in it so far. Please keep the disguise after you leave. You can place trackables there, since I think, the cache will be popular. Motorcyclists and geocachers have much in common like a will to discover never-have-been places and so on! ; )
About the area

You can watch video about this cache if you don't wish to read the description: Eternal Season Memory Grove
This place is devoted to those brothers and sisters who left us for a better place, which is believed to be somewhere there, far away from here. They went riding and never returned. They couldn't make it back... Now they are in the "Eternal Season", where they can ride forever free.
"Eternal Season" is known for any motorcyclist living in nothern parts of the world, where winters are harsh and long, when it's impossible to ride a motorcycle. And there, on the "other side" there's an Eternal Season, where there is no winter, no problems, no red traffic lights. That's where they all depart after they die here, and where they can ride forever as far and as fast as they wish with no risk.
This place is devoted to those who left this Earth on two wheels: bikers, motorcyclists, common people like you and me, but with a passion for speed and adventure. Some of them were carried away by accident, some were just not lucky enough, but they are all gone now...

This is NOT a cemetery as you may think, no, no way! This is a place for living people where they can gather and have a good time commemorating those who crashed while they were still riding all together. Bikers come to this grove and eat hamburgers from McDonald's drink Coca Cola, speak loud, like those who crashed are still hanging out here with those who are alive. This is just a glade where oak trees grow. When biker dies on the road, here, a new oak tree is planted. You can see a lot of young oak trees here. Each tree symbolizes a soul of a biker, who rests in peace now in the Eternal Season. Imagine how it will be here someday, when all these oak trees are grown! Each oak tree is marked with a tag, like a licence plate of a motorcycle. But these are not licence plates. These are the numbers for the trees with the names and nicknames of crashed bikers.
Each year more oak trees are planted here, to commemorate those who couldn't return. This is a warning for those who are still alive that we must care for each other and be more attentive.

Ofcourse the oak trees can't be just planted on their own. The area is taken care of by numerous volunteers from motorcycle associations, MC-s, and other people who care. And you can also help: There's a site of Eternal Season Grove where they discuss any help they can get, meetings, and where you can find info on all the people whose names are written on all those tags under the new planted oak trees.

Here is a link to a clip on youtube with the right soundtrack for this whole idea of Eternal Season Memory Grove: ARIA - Careless Angel
I don't know if there are places like this in other parts of the world, but I bet there are! Please describe them in comments if you know something about it.
You can visit the grove all year round, but it can be rather difficult or even impossible to retrieve the cache in winter due to huge amount of snow. Be safe! )