Not many will have noticed the rusting pillars of the under-construction Dahisar-DN Nagar Metro, but you can rest assured, one Mumbai activist is asking all the right questions about them. Unfortunately, the Metro authorities don't seem to have the answers.

mid-day visited four locations along Metro line 2A, between DN Nagar and Dahisar, and found that the pillars had been erected at a majority of the spots, and the girders had also been laid at several places.