Gypsum Caves: Gypsum Caves, generally known as gypsum karst caves, variety in the dissolution of gypsum by groundwater. As a bit acidic drinking water percolates by way of gypsum-abundant bedrock, it step by step dissolves the gypsum, making underground voids and passages. Altered Soil pH: Gypsum may have a liming effect https://www.propanraya.com/id/produk/eco-gypsum-ee-4050