Gypsum Caves: Gypsum Caves, also known as gypsum karst caves, sort throughout the dissolution of gypsum by groundwater. As a bit acidic water percolates through gypsum-loaded bedrock, it steadily dissolves the gypsum, producing underground voids and passages. Gypsum continues to be greatly used to salvage alkali soils and improve soil https://www.propanraya.com/id/produk/eco-gypsum-ee-4050