Head to the plaque at the posted coordinates, to collect the necessary information in order to find the final.
This is what you need to do:
On the plaque, you will find two years.
For the North coordinates, take the first year on the plaque, divide by 1000. Then add it to the following meaningless coordinates.
N 43 16.546
For the West coordinates, take the second year on the plaque, divide by 2000. Then add it to the following meaningless coordinates.
W 079 50.067