Phiri laphalaphala lotchedwa Pumice (lomwe limadziwika kuti pumice kapena porous basalt) ndi mtundu wa zinthu zoteteza chilengedwe. Ndi mwala wamtengo wapatali kwambiri wopangidwa ndi galasi lamoto, mchere komanso thovu kuphulika kwa mapiri. Mwala waphulusa umakhala ndi mchere wambiri komanso zinthu zina, monga sodium, magnesium, aluminium, silicon, calcium, titaniyamu, manganese, iron, nickel, cobalt ndi molybdenum. Ili ndi mphamvu yamagetsi yamagetsi yopanda ma radiation yopanda cheza, Patatha zaka masauzande ambiri, anthu apeza phindu lake zochulukirapo. Tsopano yawonjezeredwa kuminda ya zomangamanga, kusamalira madzi, kupera, zosefera, makala akumwa, kukongoletsa munda, kulima kopanda dothi, zokongoletsera ndi zina zambiri. Imakhala ndi gawo losasinthika m'malo onse amoyo! Hot rock baking back ndi mtundu wamankhwala amiyala, omwe amagwiritsa ntchito miyala yamoto yotentha kuti itenge mphamvu zoyipa za thupi la munthu, kuthandiza thupi kutulutsa poizoni ndikulimbikitsa kagayidwe kamunthu.