Bora Caves at Arakku Valley in Vishakapatnam
Known as one of the largest caves in the country, the Bora Caves at Arakku Valley in Vishakapatnam comprises of numerous formations together called speleothems along with irregularly shaped stalactites and stalagmites.
The Caves basically have Karstic limestone structures.
It is said that water percolating from the roof of the caves dissolves limestone and trickle drop by drop to form stalactite at the roof of the cave and then dripping down to the ground form stalagmite.
Stalactites are calcium carbonate deposits that hang from the top of the cave. Stalagmites are deposits that form at the bottom of the cave and grow upward.
These deposits have developed into interesting forms and structures inside the caves such as Shiva–Parvati, Mother–Child, Rishi's beard, Human brain, mushrooms, crocodile, temple, church, etc. which are named as per their structure.
