Gypsum Caves: Gypsum caves, often called gypsum karst caves, type through the dissolution of gypsum by groundwater. As marginally acidic water percolates by means of gypsum-rich bedrock, it slowly dissolves the gypsum, creating underground voids and passages. Map of gypsum deposits in northern Ohio, black squares reveal the location of https://www.propanraya.com/id/produk/eco-gypsum-ee-4050