It took almost 45 minutes to climb up to the mountain top and take this photo. Quetta city looks like a real small bowl of lights when viewed in night from mountain top.
I went there before sunset and experienced a beautiful transition of colors in the sky and lightning up of the city after the sunset with a hot cup of tea.
Its completely safe to climb up to the Koh-e-Murdar mountain that is right located in east of the city and view the beautiful night of Quetta city. The spot has one hotel that serves tea and snacks too. I would suggest to must view the Quetta city from mountain top if you are there.