Hundreds of local residents and conservationists on Monday staged a protest outside Kathmandu Metropolitan City (KMC) office against the plan of the metropolis to build an underground parking lot in Tundikhel. They have demanded the metropolis to withdraw its plan to build a three-storied underground parking lot in Tundikhel, also known as Khulla Manch and leave this space open as it serves as the lungs of Kathmandu Valley.