These caves are said to be found in 7th century. But one can seeGupta style of rock-cut Architecture which goes back to 4th-5th century AD. Most of emperor of Gupta's were vaishnav so we can see many sculpture of Narsimha, Lord Vishnu and Ramayan Stories. They are associated with the Vishnukundi kings of 420-620 CE. These caves are dedicated to Anantha Padmanabha and Lord Narashimha. Later Jain and Buddhist monks used these as rest houses.
Chronology
These caves were carved out of solid sandstone on a hillside in the 4th to 5th centuries CE. There are several caves and the best known largest one has four stories with a huge recreated statue of Vishnu in a reclining posture, sculpted from a single block of granite inside the second floor. Many Buddhist artifacts and stupas in Andhra were converted into Hindu temples and deities and undavalli is an example. It was originally a Hindu cave resembling the architecture of Udayagiri and Khandgiri. It is estimated that these caves were excavated sometime in 4-5th CE during the reign of King Vishnukundi The main cave is one of the earliest examples of Gupta architecture, primarily primitive rock-cut monasterycells carved into the sandstone hills. Initially, the caves were shaped as a Jain abode and the first-floor abode still retains the Jain style; the vihara exhibits Jain monastics and includes tirthankara sculptures. This first level of the cave is a carved vihara and includes Buddhist artwork. The site served as the Bhikkhumonastic complex during ancient period. The walls of the caves display sculptures carved by skilled craftsmen. The caves are surrounded by green countryside. From the high hill above the cave overlooking the Krishna River many fine specimens of rock-cut architecture can be seen.
Architecture
It is an Impressive Four storey rock cut temple with East facing facade of 29m long, 16m wide. There are variation in depth of each floor. The ground floor is an unfinished low pillared hall with 8 pillars and 7 door openings on façade. The first storey accommodates triple shrine at back, each with the pillared hall in front, originally dedicated to the Trinity. Sculptures on the walls represent Vaishnava deities. The second storey has a pillared rectangular shrine of Lord Vishnu on a Serpent. Sculptures of Shiva and Vaishnava and a few like the Vaishnava Alwars are sculptured later on. The top floor was unfinished with a Triple Shrine. Some of the sculptural specimens are attributed to Chalukyan period. It has 5 meter long statue of Lord Buddha in reclining position.
Transport
The only means of connectivity for the caves is by road. APS RTC operates bus services from Vijayawada, Guntur and Amaravathi to this location. APCRDA runs Tourist Bus-cum-Boat services through Krishna River from Prakasam Barrage.
