Gypsum Caves: Gypsum Caves, also referred to as gypsum karst caves, form throughout the dissolution of gypsum by groundwater. As marginally acidic h2o percolates by gypsum-prosperous bedrock, it gradually dissolves the gypsum, generating underground voids and passages. Quite generally it's formed in the hydration of anhydrite by surface waters and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050