Droogs are steep rocks which dot the surface of
Mysore
Mysore (), officially Mysuru (), is a city in the southern part of the state of Karnataka, India. Mysore city is geographically located between 12° 18′ 26″ north latitude and 76° 38′ 59″ east longitude. It is located at an altitude of ...
and
Tamil Nadu
Tamil Nadu (; , TN) is a state in southern India. It is the tenth largest Indian state by area and the sixth largest by population. Its capital and largest city is Chennai. Tamil Nadu is the home of the Tamil people, whose Tamil languag ...
,
India
India, officially the Republic of India ( Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the ...
.
The rocks are prominent
monolith
A monolith is a geological feature consisting of a single massive stone or rock, such as some mountains. For instance, Savandurga mountain is a monolith mountain in India. Erosion usually exposes the geological formations, which are often ma ...
s and may resemble
haystacks
Hay is grass, legumes, or other herbaceous plants that have been cut and dried to be stored for use as animal fodder, either for large grazing animals raised as livestock, such as cattle, horses, goats, and sheep, or for smaller domesticated ...
, some of which are high, and some of which have springs on the top. They provide formidable sites for fortification because most are scalable only by steps cut in them. There is a famous droog at Tiruchiripalli in Tamil Nadu, also known as
the Rock Fort. This is climbed by 434 steps cut into the rock face. Temples to
Ganesha
Ganesha ( sa, गणेश, ), also known as Ganapati, Vinayaka, and Pillaiyar, is one of the best-known and most worshipped deities in the Hindu pantheon and is the Supreme God in Ganapatya sect. His image is found throughout India. Hindu ...
and
Shiva
Shiva (; sa, शिव, lit=The Auspicious One, Śiva ), also known as Mahadeva (; ɐɦaːd̪eːʋɐ, or Hara, is one of the principal deities of Hinduism. He is the Supreme Being in Shaivism, one of the major traditions within Hin ...
have been built there. In the 19th century, droogs were used by Superintendent of the
Geological Survey of India
The Geological Survey of India (GSI) is a scientific agency of India. It was founded in 1851, as a Government of India organization under the Ministry of Mines, one of the oldest of such organisations in the world and the second oldest survey ...
Colonel William Lambton as sites for his
theodolite
A theodolite () is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying, but it is also used extensively for building and ...
. The survey, commissioned by the
East India Company
The East India Company (EIC) was an English, and later British, joint-stock company founded in 1600 and dissolved in 1874. It was formed to trade in the Indian Ocean region, initially with the East Indies (the Indian subcontinent and Sout ...
and completed by
Sir George Everest, laid the foundation for the extensive
Indian railway system.
Excerpt from ''Gods, Guides and Gurus'' (John Hatchard, 2010):
{{cquote, If the Madurai skyline was dominated by the huge Gopuram towers of the Meenakshi temple, Trichy’s was dominated by a spectacular granite outcrop crowned by a fort and a temple. The view from the top had to be spectacular so it was a place to visit. We had passed similar upstanding natural features on the way here, huge granite monoliths, smooth and rounded like an elephant's back and spectacularly water-stained. These outcrops, found all over southern India, were called droogs. In most places they provided easily defended sites where local chieftains could base themselves. Here in Trichy it was presumably the same story. As time went by temples were added and the place became more important.
These droogs proved of great use when, in the early 19th century, Colonel William Lambton became Superintendent of the Great Trigonometrical Survey of India. From a base line at
St. Thomas Mount
Parangimalai (known in English as St. Thomas Mount) is a small hillock in Chennai, Tamil Nadu, India, near the neighbourhood of Guindy and very close to Chennai International Airport.
The ancient Syrian Christian community of India trace the ...
, Madras he worked inland and then took the survey south from
Bangalore
Bangalore (), officially Bengaluru (), is the capital and largest city of the Indian state of Karnataka. It has a population of more than and a metropolitan population of around , making it the third most populous city and fifth most ...
toward
Cape Cormorin. He used both droogs and temple gopurams as high points on which to place the great 450-kilogram
theodolite
A theodolite () is a precision optical instrument for measuring angles between designated visible points in the horizontal and vertical planes. The traditional use has been for land surveying, but it is also used extensively for building and ...
used to measure his angles. This survey, commissioned by the English East India Company, gave it an accurate account of the lands it now controlled and was the most remarkable exercise of its kind ever undertaken anywhere. There is a story that while attempting to establish the theodolite on a certain droog, Lambton ran into trouble with a local
Muslim chief who believed he was really intent on spying on his
harem
Harem ( Persian: حرمسرا ''haramsarā'', ar, حَرِيمٌ ''ḥarīm'', "a sacred inviolable place; harem; female members of the family") refers to domestic spaces that are reserved for the women of the house in a Muslim family. A har ...
.
Landforms of Karnataka
Rock formations of India