The Javadhu Hills are an extension of the Eastern Ghats spread across parts of Vellore and Tiruvannamalai districts in the northern part of the state of Tamil Nadu in southeastern India. This range separates Vellore and Tiruvannamalai districts. Tirupattur district lies on the north-western side and Tiruvannamalai district lies on the south-eastern side of this range. The towns of Tirupattur, Vaniyambadi and Ambur of Tirupattur district are located on the north western side and the towns of Chengam and Polur of Tiruvannamalai district are located on the south eastern side. The hills consist of bluish-gray granites, with peaks averaging 3,800–4,000 feet. About 50 miles wide and 20 miles long, they are bisected into eastern and western sections by the Cheyyar and Agaram rivers, tributaries of the Palar. "The Barahmahal hills to the west are somewhat bare, but the Jawadhi are clothed in verdure to the very summit on the east: towards sunset the whole range puts on a purple tinge like heather bloom. The sharper shadows mark out minor ranges and valleys, which in the midday merge in the mass of the range, and beyond Bommaikuppam, looking from Tirupatur, a silvery cascade may be seen, shining bright in the setting sun.". During the British colonisation of India, the Javadhu Hills appeared occasionally in government gazetteers and manuals, ethnographies, and travelers' accounts. Henry le Fanu, writing in 1883, admired the beauty of the Jawadhi hills. The Indian astronomer Vainu Bappu selected the hills as the site of the Kavalur Observatory, which began operations in 1967. There are few tourist places near Javadhu Hills; Beemanmadavu waterfalls is one of the most frequented one. Jamanamarathur is one of the larger villages in these hills, populated with around 10,000. With an altitude of 1957m, it is the second village in height in Javadhi hills in Tiruvannamali district. One can reach Jamanamarathur, from west - Vaniyambadi or Tirupattur, from east - Polur and from South Chengum. Highest peak : 1,400 m. Way : ● Vellore ● Polur ● Alangayam ● Tirupattur. Nearest City Corporation : ● Vellore. Nearest airport : Vellore Airport
Javadhu hill range is large, and thinly populated. Many peaks and valleys have tribal settlements. Jamuna Marathur is the most populated in the range, located centrally. By road : Chennai-Arcot-Arni-Polur-Jamuna Marathur. By Road : Chennai-Arcot-Kannamangalam-Amirthi-Jamuna Marathur. By Road : Vellore-Vanniyambadi-Amirthi-Jamuna Marathur. From Chennai Take NH4, Chennai-Poonamallee Bypass- Arcot and take Arni road, after Arni Bypass take the Polur Road, upon reaching Polur town, ask the route for Aththimur and after Aththimur one can see the sign boards for Jamuna Marathur. The weather and roads are very nice, thanks toTamil Nadu government and its state highways department for maintaining the roads in good condition. Please Avoid driving at night or dark hours Safe timing for travelling is 6am-5pm, After polur town To jamuna marathur 40 km of Ghat roads, mostly one cannot see any shops or even people. But it is mind blowing road. Places like Bheeman falls have become alcohol drinking spot for the tourist groups, so not so safe for families unless law and order is enforced.