The shore of Birch Lake teemed with folks greeting Dave and Amy Freeman when they emerged from their year in the Boundary Waters wilderness, creating a sensory overload that almost overwhelmed them.
But only when people began to leave did the couple literally get a whiff of what re-entering civilization involved.
"The car exhaust kind of shocked us," Dave said. "Our senses had gotten so acute."
For 365 days in 2015 and 2016, the Freemans lived in the Boundary Waters Canoe Area Wilderness, paddling a canoe or towing a toboggan from campsite to campsite.
They fell through the ice. They were trailed by wolves. They drank from the lakes.
Mostly, they bore witness.
They call it "witness activism." They're not sure they invented the term, "but it seems like what we are doing," said Dave, sitting in the office of Milkweed Editions in Minneapolis, publisher of their new book "A Year in the Wilderness: Bearing Witness in the Boundary Waters." The book builds on what they'd posted on their Instagram account, freemanexplore.
They had one purpose: to focus attention on any environmental consequences of proposed copper-nickel mines near the BWCA. Unlike mining for taconite and iron, copper is contained in sulfide ore. When the mining process exposes that ore to air and water, it forms acid runoff that can threaten rivers and lakes.