Gypsum Caves: Gypsum caves, also referred to as gypsum karst caves, form from the dissolution of gypsum by groundwater. As slightly acidic drinking water percolates by gypsum-wealthy bedrock, it gradually dissolves the gypsum, building underground voids and passages. With incorrect use, gypsum could also result in harm to our gardens. https://www.propanraya.com/id/produk/eco-gypsum-ee-4050