Eurographics Eurographics Northern Lights - Yellowknife 1000-Piece Puzzle Box size: 10" x 14" x 2.37". Finished Puzzle Size: 19.25" x 26.5". The Northern Lights Shine. Yellowknife is the best location in the world for viewing the aurora borealis. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time.