Hierve el Agua mountainside. The water has a temperature of . As the water runs down the rock face, it forms large stalactites similar to those found in caves. The flow of water from the spring varies significantly between the dry and rainy seasons. 95% of the surface rock formations are of calcium carbonate; however, lower layers of both rock and water currents are little known as they are sealed by the above layers. The calcium carbonate gives the formations a white or near white appearance, but other minerals that can be present in the water, such as silver, barium and iron can
Resava Cave formed by the sinking river in the limestone substrate. Cave formations are right at the entry. They are formed through the dissolving of the calcium carbonate. The color depends on the mineral through which the water flows: red from the iron oxide, white from the crystallized calcium and yellow from the traces of clay. The symbol of the cave is a massive stalagmite, tall and wide. After its appearance, it was named the Statue of mother with a child. The cave consists of 8 halls. Resava cave was accidentally discovered by the local shepherds in 1962. After being explored for