Silathoranam is a natural rock formation, which has got enormous value from archaeological point of view, Silathoranam near the
Chakra Teertham is a must see spectacle. Since the rock look likes and appears to be the hood of a
serpent, a
conch and a
discus, it is conceived that this source is dedicated to Lord Venkateshwara idol.
This arch formation is categorized as pre-Cambrian that dates back to millions of years ago. It is said that there are only two other sites like this in the entire world itself. The other two are the one that cuts through the headland of the
Dalradian Quartzite in Uk &
the Rainbow Arch Bridge of Utah in
USA .
Geologists found out
Silathoranam accidentally while excavating a geological fault on
Tirumala Hills. This wonderful phenomena of nature has been subjected to various schools of thoughts. Some are of the view that it could be the effect of a wave action from oceanic transgression or intensified climatic settings and corrosion. Others opined that it might have been carved out of quartzite. A national monument protected by the state government, this natural splendor fascinated quite a number of tourists.