Metro MantraRailway Minister Inspects Howrah Metro Station: India’s Deepest Station Set to Redefine Underground Commuting by NewsmantraJune 27, 2023 Share0 Union Railways Minister Ashwini Vaishnaw inspected the Howrah Maidan to Esplanade corridor of Kolkata’s East-West Metro (Green Line), which is about to be operational by the end of this year.