India, Oct. 26 -- The proposal for Mumbai's second underground metro corridor has gathered pace, with the Mumbai Metro Rail Corporation Ltd (MMRCL) forwarding it to the Centre for approval. Estimated to cost Rs.23,487 crore, the 17.4-km Metro Line 11 will run between Anik Depot in Sion and the Gateway of India, connecting the eastern edge of south Mumbai with the suburbs through a fully underground route.

The new corridor-an extension of Metro Line 4 (Wadala-Thane-Kasarvadavali) being built by the MMRDA- will pass beneath some of Mumbai's most congested localities, including Wadala, Byculla, Nagpada, Bhendi Bazaar, Crawford Market, Horniman Circle, and Chhatrapati Shivaji Maharaj Terminus (CSMT), before terminating at the Gateway of Indi...