Waterton-Glacier International Peace park connects over the US-Canada border between Montana and Alberta. However, the two parks don’t match up in their cross-border boundary.
Glacier Park stretches west to encompass the North Fork Flathead River Valley, but the Canadian Flathead is not part of the Park. The Canadian Flathead is Provincial land, akin to state or forest service land in the US, and offering the potential for logging or mineral development. Conservationists have been angling to “Complete the Park” by expanding Waterton into the North Fork Valley.