Solutional cave and most abundant solutional caves are located in limestone. Limestone caves are often adorned with calcium carbonate formations produced through slow precipitation. These include flowstones, stalactites, stalagmites, helictites, soda straws, calcite rafts and columns. These secondary mineral deposits in caves are called "speleothems". Limestone dissolves under the action of rainwater and groundwater charged with HCO (carbonic acid) and naturally occurring organic acids. The dissolution process produces a distinctive landform known as "karst", characterized by sinkholes, and underground drainage. Solutional caves in this landform—topography are often called karst caves. Lechuguilla Cave in New Mexico and nearby Carlsbad Cavern are now believed
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