Hi - scene at sunset at the "white sands" nature reserve located at the southern edge of the Kalahari Desert in South Africa. This area is a "must" for bird-lovers and has magnificent sand dunes. Due to the soil composition of the sand, it actually growls like a lion when walking in it. This phenomenon is known to take place during the months ending with an "r". I can vouch for the unique growling sound as I personally heard it!