Gypsum Caves: Gypsum Caves, also known as gypsum karst caves, type throughout the dissolution of gypsum by groundwater. As a little bit acidic water percolates by means of gypsum-prosperous bedrock, it slowly dissolves the gypsum, producing underground voids and passages. Map of gypsum deposits in northern Ohio, black squares indicate https://www.propanraya.com/id/produk/eco-gypsum-ee-4050