The gathering took place at the new Queen City Cinema Club in Bangor.
It featured a guest talk from Dick Andron, vice chairman NNthe vice chair of the Hirundo Wildlife Refuge.
The 2,400-acre preserve in Old Town has miles of trails, streams and an environmental education center.
They say they partnered with Bangor Greendrinks before they made their area trail map.
"I think being part of nature and going into nature is extraordinarily important for our mental health, as well as our physical health," Andron said. "There's nothing like a nice walk in the woods."
Bangor Greendrinks hosts family-friendly events around the city.
Money rasied from drink sales and donations go toward sustainability and community efforts.