Snow roll phenomenon that represents the viscoelasticity of snow (snow rolling phenomenon)

मौसम-घटनाक्रम / Snow roll phenomenon that represents the viscoelasticity of snow (snow rolling phenomenon)
प्रकृति-लैंडस्केप / Snow roll phenomenon that represents the viscoelasticity of snow (snow rolling phenomenon)
परिस्थितिकी / Snow roll phenomenon that represents the viscoelasticity of snow (snow rolling phenomenon)