班芙Bow Lake弓湖，是卡爾加里弓河Bow River的源頭之一。走進弓湖，沿著山谷繼續向前，來到Bow Glacier Falls─看著從冰川奔湧而下的水流，不禁想問：滾滾弓河水，究竟來自哪裡？

Bow Lake is one of the headwaters of the Bow River in Calgary. Venturing past the lake and further along the valley brings you to Bow Glacier Falls; gazing at the water cascading down from the glacier, one cannot help but wonder: where exactly do the surging waters of the Bow River originate?