This trail is a real climb! According to my map, it's about 2000 feet in 3 miles. You'll drive to the trail head and where parking is free. But, .75 mile of the road is very rough, so take it slow and bring a spare tire just in case. Low clearance cars are okay, just be careful.
The trail itself starts in an Aspen grove, rises through pines [Aug 2011, untouched by the beetles], then into beautiful, steep, alpine meadows. Finally you emerge into alpine tundra, at the tree line. The lake is small, and the peaks rising above it are beautiful. The view across the valley and mountain is breath-taking. Wear good shoes, bring plenty of water and some food for the top of the trail, and leave plenty of time to set a comfortable pace (start before noon). Definitely worth the climb!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.