Bowron Lakes, British Columbia. A late-afternoon rainbow floats above a kayaker on Lanezi Lake in Bowron Lakes Provincial Park in the Caribou Mountains of British Columbia, Canada. The glacier-studded Caribou Mountains contain hundreds of narrow glacial valleys, many of which are filled with deep lakes carved out during the last advance of ice sheets during the Pleistocene Epoch. All these valleys were filled with deep glaciers at the maximum extent of the ice sheets about 20,000 years ago. Several years ago, Caribou Mountains Provincial Park was created south of here to form a large continuous parcel of protected land 760,000 hectares in size extending south through Wells Gray Provincial Park. Today, these parks are surrounded by a sea of clearcuts.