SubjectA lake between bare mountain slopes
ReferenceTwo credited CC0 photographs
Looking atHow the water changes colour with depth
Paired withThe sea from Where the Water Stops
In the reference photograph, bare slopes come down from both sides and meet in a notch, where a distant snow peak shows. The water in front is shallow and brown over sand and stones, and it turns turquoise where the lake deepens toward the far shore.

Reading the colour
The colour change runs from front to back rather than left to right, so the picture reads like a depth chart. Light from above the frame adds a streak of flare and the sparkle on the near water.
