A girlfriend of mine found her husband at a birdwatching club. It is interesting to learn something new and it brings you in the woods.
Besides they organize trips to different areas where you meet even more people.
They also have travelclubs to different countries.
When we moved to the US we joined a local club, part of the reason was, so we would learn about new areas, because you also often get to go on private land.
It is a mixture of people and they often know so much about nature. We learned about different trees and plants, all the sudden the woods looked different to us.