Layers of wall around riddle

A little pool with two layers of wall around it. One white and soft. The other dark and hard. Amidst a light brown grassy lawn with an outline of a green grass. What is it ?

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SherlockHolmes Expert Asked on 6th February 2019 in Brain Teaser.
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  • 1 Answer(s)

    Coconut

    dyj Expert Answered on 6th February 2019.
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