It is the highest broad gauge tunnel in India. It is on the Visakhapatnam-Kirandaul line.
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It is across the Kolab River, 900 m (3,000 feet) above sea level with facilities for hydroelectricity generation.
Cave shrine of Lord Shiva on the banks of the River Shabari. The place name literally means 'hidden God'. Odisha Tourism has a lodge at Gupteswar. There are other caves such as Swargadwar Cave and Paravadi Cave nearby. There is a view point at Sangam Ghat. Kanger Valley National Park is across the river and the inter-state border. During Shivratri the cave tempple attracts 200,000 devotees.
Matsya Tirtha
The Machkunda River forms the 175 m high waterfalls, with facilities for generation of hydroelectricity at Machkunda Power Station. It is located in the deep forests and is amongst the higher waterfalls in the country. Ankadeli (Onukudelli), a village 3 km away, has its weekly market on Thursdays. The Bondas, a primitive tribe come to the market. There is a dam and reservoir at Jolaput nearby, across the Odisha-Andhra Pradesh border.