All of these pictures except the first one is at Moriane Lake. The first one may look like nothing when you first look at it but if you'll notice there two tunnel entrances. This explains it a lot better than I can but basically they used the tunnel to gain altitude more gradually.
The area around Moraine Lake is absolutely beautiful. The lake changes color as the sun hits it at different angles. We didn't have time to stay there until the sun was covering the whole lake but you can see how the color is different in the sunny and shady areas.