About This Puzzle
Did you know? Alpine lakes often appear emerald green due to glacial rock flour — fine sediment suspended in the water that scatters sunlight. The color shifts with seasons as meltwater levels change. Source
Photograph by Paul Pastourmatzis via Unsplash.
Estimated Solve Times
- 10 pieces: Under 1 minute
- 36 pieces: 3-6 minutes
- 64 pieces: 8-15 minutes
- 100 pieces: 15-30 minutes
- 200 pieces: 35-60 minutes
- 400 pieces: 1-2 hours
