Gypsum Caves: Gypsum Caves, also referred to as gypsum karst caves, sort with the dissolution of gypsum by groundwater. As marginally acidic h2o percolates via gypsum-wealthy bedrock, it step by step dissolves the gypsum, producing underground voids and passages. The type of gypsum: Unique processing techniques can produce gypsum products https://www.propanraya.com/id/produk/eco-gypsum-ee-4050