A dune is a hill or mound of sand formed by wind, often found in deserts or along coastlines. As wind blows sand into piles, dunes can grow and shift over time. They can range in size, from small hills to massive formations. Dunes help shape the landscape and play a role in protecting coastal areas from erosion. Comment a sentence below using the word “dune” . . . . #ESL #TESOL #TEFL #EFL #ELT #EnglishLanguageLearner #ELL #LearnEnglish #EnglishLearning #EnglishTips #EnglishGrammar #EnglishVocabu