Reposted from Cristina Eisenberg's blog at the Huffington Post with permission. It all began with roadkill. Banff, the crown jewel of the Canadian national parks, is a paradox. Big, primeval wildness and all it embodies—peaks, waterfalls, and glaciers—surround the townsite, the antithesis of wildness with its bustling boutiques and hotels. Highway 1, one of the busiest Canadian roadways, slices through the park via the Bow Valley. It vectors millions of people and their vehicles through this iconic landscape, creating a lethal corridor for wildlife. Indeed, in the 1970s animals died so frequently here that people called the highway the "meat maker." To reduce roadkill, the federal government and Parks Canada created the Banff Wildlife Crossings Project. This ambitious project involved fencing the 50-mile corridor between Canmore and Lake Louise along Highway 1 and building many wildlife crossing structures. The fencing prevents wildlife mortality on the highway, and the crossing structures create a connected landscape for animals. Highway 93 mitigation in Montana and the Tijeras Canyon Highway 40 mitigation in New Mexico. I visited the Banff crossing structures with Steve Michel, a Parks Canada human-wildlife conflicts officer. We pulled over on Highway 1, west of the Banff townsite, at the paired Wolverine Overpass and Underpass. Through a gate in the fence, Michel took me into a haven-like world. Outside the fence, vehicles hurtled by everything from motorcycles to semi-trucks that shook the ground with their passing. But as we walked onto a grassy apron to the top of the overpass, the deafening traffic noise subsided. We'd entered a world far safer for wildlife than the pavement and metal below. Mike Sawaya did a DNA study. For three years, they snagged bear hair with barbed wire positioned at the structures. Each year, they found a dozen male and female grizzlies using the crossings, in an even gender mix. wolverine, Clevenger is finding that this elusive, rare species also uses the structures. Learn more about large carnivore conservation by entering the Rewilding Adventure sweepstakes.