|Elevation||60 m (200 ft)|
|Location||Andheri, Mumbai, India|
|Age of rock||66 myr|
|Volcanic arc/belt||Deccan Trap|
|Easiest route||East (steps)|
Gilbert Hill is a 200 ft (61 m) monolith column of black basalt rock at Andheri, in Mumbai, India. The rock has a sheer vertical face and was formed when molten lava was squeezed out of the Earth's clefts during the Mesozoic Era about 66 million years ago. During that era, molten lava had spread around most of the Indian states of Maharashtra, Gujarat and Madhya Pradesh, covering an area of 50,000 square kilometres (19,000 sq mi). The volcanic eruptions were also responsible for the destruction of plant and animal life during that era.
According to experts, this rare geological phenomenon was the remnants of a ridge and had clusters of vertical columns in nearby Jogeshwari which were quarried off two decades ago. These vertical columns are similar to the Devils Tower National Monument in Wyoming, and the Devils Postpile National Monument in eastern California, USA.
Gilbert Hill was declared a National Park in 1952 by the Central Government under the Forest Act. In 2007, after years of lobbying by geologists, the hill was declared a Grade II heritage structure by the Municipal Corporation of Greater Mumbai (MCGM), and all quarrying and other activities around the monument were prohibited. Over the period of time, Gilbert Hill has faced severe erosion problems too.
Atop the rock column, two Hindu temples, the Gaodevi and Durgamata temples, set in a small garden, are accessed by a steep staircase carved into the rock. The hill offers a panoramic view of suburban Mumbai.
- Times of India (Bombay) article dated 16 December 2004.
- Thomas, Shibu (2007-09-10). "Gilbert Hill to be Heritage Structure". Times of India, Mumbai. Bennett, Coleman & Co. Ltd. Retrieved 2008-05-02.
- Singh, Vijay (2006-07-06). "Gilbert Hill is on shaky ground". The Times Of India. Retrieved 2006-07-06.
- Times of India - Efforts on to get Gilbert Hill on touristThis was full round hill at Andheri. It was known as Gaondevi's donger गांवदेवीचा डोंगर in my childhood. There is a temple of Gaondevi on the top. After independence quarrying, authorised or unautharised, started and the hill has been cut for stones from all sides. It was difficult to climb from north but some adventurous clmbed it through rocks. We climbed from south, which was strenuous but not difficult. It, the muddy road, should still be there to reach the temple. I am not sure. I visited Gamdevi temple several times either with family or friends. (1945-1962) Very little place around the temple. There was a pujari, who used to live there. Had he not objected in the name of Godess and temple and undertaken fast, the remaining hill also would have been demolished. Forget about heritage and environment. We sympathised with him but nobody seriously pursued any movement to preserve it. Now it is found to be one of the oldest rock. map