Lake McDonald, on the western side of Glacier National Park.

View from the western side of the Going-to-the-Sun Road (Glacier NP).

View from the western side of the Going-to-the-Sun Road (Glacier NP).

View from the western side of the Going-to-the-Sun Road (Glacier NP).

View from the western side of the Going-to-the-Sun Road (Glacier NP).

View from the western side of the Going-to-the-Sun Road (Glacier NP).

View from the western side of the Going-to-the-Sun Road (Glacier NP).

Waterfall along the trail to Lake Otokomi (Glacier NP).

Still morning on Lake Otokomi (Glacier NP). Even in July, there are patches of snow.

Still morning on Lake Otokomi (Glacier NP).

Still morning on Lake Otokomi (Glacier NP).

Me, hauling a full backpack on the trail to Red Eagle Lake (Glacier NP).

My brother crossing a stream on the trail to Red Eagle Lake (Glacier NP).

Red Eagle Lake (Glacier NP).

Pumping water from Red Eagle Lake (Glacier NP).

View from Granite Park Chalet (Glacier NP).

The Garden Wall, near the summit of the Going-to-the-Sun Road (Glacier NP).

Hidden Lake Trail (Glacier NP).

View from Hidden Lake Trail (Glacier NP).

Hidden Lake (Glacier NP).

Hidden Lake (Glacier NP).

On the shore of Hidden Lake (Glacier NP).

View from the eastern side of the Going-to-the-Sun Road (Glacier NP).

Classic tour buses on the eastern side of the Going-to-the-Sun Road (Glacier NP).

Mountain goat.

Waterfall along the eastern side of the Going-to-the-Sun Road (Glacier NP).

St. Mary Lake and Goat Island (Glacier NP).

Chief Mountain, seen from the road between Glacier NP in Montana and Waterton Lakes NP in Alberta.

The Prince of Wales Hotel on a promontory between Upper and Middle Waterton Lakes (Waterton Lakes NP).

View from a campground just outside Waterton Lakes NP.

Cameron Falls (Waterton Lakes NP).

The Cameron River flows into Upper Waterton Lake.

Upper Waterton Lake. One of my campsites was on this peninsula.

Upper Waterton Lake.

Upper Waterton Lake.

My campsite on Upper Waterton Lake.

Mule deer (Waterton Lakes NP).

While there are grizzly bears around, the real danger to your camp food comes from Columbia ground squirrels (Waterton Lakes NP).

Cameron Lake (Waterton Lakes NP).

Summit Lake and Chapman Peak, along the Carthew-Alderson Trail (Waterton Lakes NP).

Custer Peak above Summit Lake (Waterton Lakes NP).

The scree-covered slope leading to the summit of the Carthew-Alderson Trail (Waterton Lakes NP).

View of North Lakes from the summit of the Carthew-Alderson Trail, flanked by Chapman and Custer Peaks (Waterton Lakes NP).

The descent to Carthew Lakes, another solitary hiker in the lower left foreground (Waterton Lakes NP).

A gull-shaped patch of snow above Lower Carthew Lake, with a few hikers doing some impromptu sledding (Waterton Lakes NP).

Alderson Lake, surrounded by scree-covered slopes (Waterton Lakes NP).