Starting with the must-dos—a visit to Araku is incomplete without Borra Caves. These million-year-old naturally formed limestone caves are supposedly the deepest caves in the country. Filled with natural stalagmite and stalactite, the caves are usually lit up with the light forming gorgeous patterns on the interiors of the caves. Local guides will help you spot familiar formations like Shiva-Parvati's images, a sage's beard, a mother and child, a crocodile, and a human brain. To think these are all naturally formed over the years will wow you! We recommend heading here wearing comfortable footwear since parts of the caves can get slippery. A staircase leads you to the shrine inside; also, the caves are usually super crowded over the weekends so plan accordingly.