i am thomas draton. thanks for watching. >> we are in the farthest north reaches of wisconsin, in america's midwest, 200 miles from the nearest major city. it's home to the chippewa people, native american tribes who've lived here for generations alongside farmers and miners. but today, tourism is among the primary industries. >> right now we are on the coast of lake superior, which is frozen over solid. thousands of people have come to see some ice caves that are just around the corner here. you can see a line of people just as far as you can see. >> it's a pristine landscape, but underneath the natural beauty lies a coveted resource: two billion tons of iron ore. >> a mining company called g-tac is planning to dig what could be one of north america's largest open pit mines. it would start with a four and a half mile open pit, and could eventually stretch twenty-two miles. >> it would be upstream of a massive wetland that feeds lake superior, part of america's great lakes, which make up 20% of the world

i am thomas draton.nks for watching. >> we are in the farthest north reaches of wisconsin, in america's midwest, 200 miles from the nearest major city. it's home to the chippewa people, native american tribes who've lived here for generations alongside farmers and miners. but today, tourism is among the primary industries. >> right now we are on the coast of lake superior, which is frozen over solid.