Iceland's flap water system is super beautiful and amazing! How is this pattern formed? Iceland's flap water system is super beautiful and amazing! How is this pattern formed? Iceland's flap water system is super beautiful and amazing! How is this pattern formed? Iceland's flap water system is super beautiful and amazing! How is this pattern formed? Iceland's flap water system is super beautiful and amazing! How is this pattern formed? Iceland's flap water system is super beautiful and amazing! How is this pattern formed? Iceland's flap water system is super beautiful and amazing! How is this pattern formed?