Large areas of sand dunes have depressions up to 40 meters deep and hills up to 50 meters high. There are patterns called "wind patterns" blown out by strong winds. There are also sand curtains sliding down from the surface of the dunes like avalanches. These magnificent dunes are changeable and constantly changing. The sand dune is constantly changing its expression. Sand and wind weave into a magnificent panorama, to the end of the dune is the seaside, along the coastline overlooking the sky, there are red clouds, clear clouds rolling over the sea. Walking in the sand dunes, enjoying the beautiful wind patterns carefully, relying on their feet, walking in the rich and colorful charm. In the sand dunes, you can encounter huge depressions, like valleys of mountains, up to 40m deep, filled with fresh water rather than sea water. Clusters of unknown plants grow stubbornly, forming patches of "mini-oasis". Close to the sea, the fine sand shines with white and grey light, and as it gradually enters the inland, it changes from light yellow to yellowish brown, stepping on the soft sand slope, the vast sand sea stretches out endlessly. When the strong wind blows, the layers of wind patterns ripple. In front of me is the blue sea of Japan, and I walk to the other end of the dune, leaving behind a long string of single or double footprints.