Calcium carbonate latter is especially evident in day-to-day life of people who have hard water. Water in aquifers underground can be exposed to levels of CO much higher than atmospheric. As such water percolates through calcium carbonate rock, the CaCO dissolves according to the second trend. When that same water then emerges from the tap, in time it comes into equilibrium with CO levels in the air by outgassing its excess CO. The calcium carbonate becomes less soluble as a result and the excess precipitates as lime scale. This same process is responsible for the formation of stalactites and stalagmites in limestone
Gupteswor Cave, Parbat longest caves in Nepal. Most of the inside part of the cave is made up of deposition of calcium carbonate dissolved from surrounding limestone, with ground water which is a general concept of forming most of the cave. All statues and all portraits which can be seen inside the cave are natural. Chaite Dashain and Mahashivaratri are the most important days to visit the Gupteswar Cave for the Hindu prayers. Many species of bats inside the cave are also an attraction for visitors. It is located 15 minutes walking distance from the Kusma city, about from the Pokhara city and