Valvan Dam Valvan Dam is a Britisher built garden and is more than a century old. This dam has a garden at the foot of its wall, and is a popular evening spot 2 km from the town A distance of 5 km from Lonavala Railway Station, and 9 km from Karla Caves, Valvan Dam is a gravity dam on Indrayani River at Velvan village near Lonavala in Pune district of Maharashtra. It is one of the places of sightseeing in Lonavala.