Environment is the most important in the present world. The place is beautiful which environment is ok. This is a valley. If it was filled or used as a place for damping waste and other non usable things can you imagine how the place would like to see? will you come to here to enjoy your free time? I hope no as there would bad smelt, mosquito and flies. If we take care of our environment then it would be a better place.
So all of us should protect the environment.
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From @faruque