Gypsum Caves: Gypsum caves, also called gypsum karst caves, kind in the dissolution of gypsum by groundwater. As slightly acidic h2o percolates through gypsum-rich bedrock, it little by little dissolves the gypsum, generating underground voids and passages. Natural gypsum is mined from geological deposits. These deposits are usually located in https://www.propanraya.com/id/produk/eco-gypsum-ee-4050