Volcanic rock Pumice (yomwe imadziwika kuti pumice kapena porous basalt) ndi mtundu wazinthu zoteteza zachilengedwe.Ndi mwala wamtengo wapatali wopangidwa ndi galasi lamoto, mchere ndi thovu pambuyo pa kuphulika kwa mapiri.Mwala wophulikawu uli ndi mchere wambiri komanso kufufuza zinthu, monga sodium, magnesium, aluminium, silicon, calcium, titaniyamu, manganese, chitsulo, nickel, cobalt ndi molybdenum.Ili ndi maginito otalikirana ndi maginito opanda ma radiation, Pambuyo pazaka masauzande ambiri, anthu apeza phindu lake mochulukirapo.Tsopano yawonjezeredwa kuminda yomanga, kusungirako madzi, kugaya, zosefera, makala amoto, kubzala m'munda, kulima kopanda dothi, zinthu zokongoletsera ndi zina zotero.Zimagwira ntchito yosasinthika m'mbali zonse za moyo!Hot rock baking back ndi njira yochizira mwala, yomwe imagwiritsa ntchito miyala yamoto yotenthedwa kuti itenge mphamvu zathupi la munthu, kuthandiza thupi la munthu kuchotsa poizoni ndikulimbikitsa kagayidwe ka anthu.