Erra Matti Dibbalu also called as Red Sand Hills, a notified National Geo-heritage Monument, is situated at the outskirts of Visakhapatnam City. Scientists are of the opinion that the preliminary bankruptcy of this epic story started out as far returned as 1.8 million years ago and stretched throughout the vast canvas of geological time to round 10,000 years ago.
During that point the sea stage rose to as tons as 150 feet and fell away some of times to the current degree. Between these oscillating sea stages the coast became submerged and uncovered again and again again, large volumes of clay, silt and sand blanketed the coast from in which the ocean water had receded. Due to the acute changes in climatic situations the cloth below the sandy dunes “baked” within the sun like a brick gets baked in a kiln leading to the extraordinary pink sand dunes. Subsequently action of the wind and flowing water brought on the deeply gullied feature panorama.