Gypsum Caves: Gypsum caves, also known as gypsum karst caves, kind throughout the dissolution of gypsum by groundwater. As slightly acidic drinking water percolates via gypsum-abundant bedrock, it step by step dissolves the gypsum, generating underground voids and passages. The kind of gypsum: Distinct processing techniques can produce gypsum products https://www.propanraya.com/id/produk/eco-gypsum-ee-4050