If you're looking for a more isolated getaway, Gudiyam Cave might just fit the bill. Just 10 km ahead of Poondi (home to the Poondi reservoir) in Thiruvallur district, this place is an archaeological marvel. A 4 km trek will lead you to the caves which are believed to have hosted a Palaeolithic settlement between 10,00,000 and 12,000 years ago. Mindblowing right? The route can be tricky, so take help from the villagers.
Gudiyam Cave
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