The massive peaks of the Continental Divide in northwest Montana are the backbone of Glacier National Park and its sister park in Canada, Waterton Lakes, which together make up the International Peace Park. From their slopes, melting snow and alpine glaciers yield the headwaters of rivers that flow west to the Pacific Ocean, north to the Arctic Ocean, and southeast to the Atlantic Ocean via the Gulf of Mexico. Coniferous forests, thickly vegetated stream bottoms, and green-carpeted meadows provide homes and sustenance for all kinds of wildlife.