ナショナルジオグラフィックさんのインスタグラム写真 - (ナショナルジオグラフィックInstagram)「Photo @jasperdoest / Newly formed dunes at the Sand Motor, an artificial, peninsula-like sandbank constructed off the coast of the Netherlands. With nearly a quarter of the country below sea level and another half sitting less than a meter (yard) above, its very existence is under constant attack. Ocean currents, wind, and waves were given free rein to spread the sand along the Delfland coast to help protect the Netherlands against rising sea levels. The Sand Motor is part of an innovative coastal maintenance effort. Since its construction, dozens of researchers from various universities and institutions have been following the development of the Sand Motor. Follow @jasperdoest to learn more about the human-nature connection. #zandmotor #sandmotor #coast #dunes #netherlands」12月31日 12時34分