|Elevation||60 m (197 ft)|
|Location||Andheri, Mumbai, India|
|Age of rock||65 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 65 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.
See also 
- 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 tourist map