Together, they comprise the Waterton-Glacier International Peace Park, which is listed by the United Nations Educational Scientific and Cultural Organization (UNESCO) as one of its world heritage site.
Both the Canadian and US parks also have been declared by UNESCO to be Biosphere Reserves. World heritage sites are said to have outstanding cultural or natural importance to the common heritage of all humankind.
Critics also say the mining project runs the risk of spoiling the pristine waters and fragile ecosystem of parks on both the Canadian and US sides of the Rocky Mountains, which have come to symbolize peace and friendship between the two countries.
Chief among environmentalists' concerns are the impact on the area's abundant wildlife, including lynx, wolves and especially grizzly bears, whose mating habits could be adversely impacted by the noisy and intrusive mining equipment.
The company involved?
The natural gas will come from the same coal-bed methane that has dirtied up Wyoming’s Powder River country.
Despite the provincial government’s claims that neither national park has anything to worry about, an international commission recommended against a similar project back in 1988.