New Delhi: After mysteriously appearing and vanishing in different parts of the world since November, a `monolith’ has now emerged in a garden in Ahmedabad city, Gujarat. This is the first appearance of a monolith, a structure made of shiny steel sheets, in India, a Delhi-based news agency PTI reported. The report said triangular prism-shaped structure, around seven feet tall, became an instant hit among city dwellers after it was spotted in a garden on…