Located at 3140,4420 the Scarwood Reach puzzle can seem extremely confusing at first, and in truth I do actually understand how it works, I just know the correct order to do it. You will see two rows of three pillars. On the front two pillars there will be crystals you can click on. You simply have to click on them in a specific order to complete this puzzle.
The order is:
1) Left Pillar, Top Crystal
2)Right Pillar, Middle Crystal
3)Left Pillar, Bottom Crystal
4) Right Pillar, Top Crystal.
After clicking on these crystals in this order you will complete the puzzle and receive your reward.
