Journey into India’s Longest Underground Caves
Hidden beneath the rugged limestone hills of Andhra Pradesh, Belum Caves—locally known as Balloon Caves—stretch over 3 kilometers, making them the second-longest natural caves in India. Formed by constant underground water flow, these extraordinary caverns feature majestic stalactites, stalagmites, and spacious chambers that captivate explorers and geology enthusiasts alike.
Best Time to Visit
November to February offers cool, comfortable temperatures (18–25 °C) for easy exploration. Summer months can be hot and humid inside the caves, so morning visits are recommended then.
Key Highlights
• Meditation Hall: A vast chamber where Buddhist monks once
practiced meditation.
• Patalaganga: An underground perennial stream that flows
silently through the cave.
• Thousand Hoods: A ceiling formation resembling a serpent
with many heads.
• Musical Chamber: Naturally formed stalactites that produce
unique sounds when tapped.
• Stunning Limestone Formations: Intricate stalactite and
stalagmite patterns shaped over millions of years.
How Srinivasa Caravans Takes You There
Our caravan starts from Hyderabad or Bangalore, passing through scenic Rayalaseema landscapes. We handle entry permits and provide guided cave tours with headlamps, ensuring a safe and informative underground adventure.
Visitor Tips
Wear comfortable shoes with good grip and carry drinking water. Photography is allowed, but tripods may be restricted in narrow passages. The caves remain a steady 33 °C—light, breathable clothing is best.
Must-Do Activities
- Take the full guided tour through all major chambers.
- Observe the underground stream at Patalaganga.
- Listen to the natural acoustics in the Musical Chamber.
- Photograph the Thousand Hoods limestone formations.
- Combine your trip with a visit to nearby Gandikota Fort.


