Location: Waterton Lake National Park
Distance: 12.2 miles (including side trip to Upper Rowe Lakes)
Elevation Gain: 3480 feet
Highest Elevation: 8400 feet
Time: 6.5 hours
This trail is divided in two main sections: a pleasant, though persistent uphill path in the forest from TH to Rowe Lake Meadow (first 3+ miles), followed by a very steep climb through alpine rocky landscape.
Start of rocky climbing path
I was told there are 6 Lineham lakes; 5 in above photo
On the way back, I hiked up to upper Rowe Lake.