Vivek Dhanu on Instagram: "Day 96 / 101 - Gilbert Hill is a rare volcanic rock formation located in Andheri West, Mumbai. It was formed around 66 million years ago when molten lava from massive volcanic eruptions cooled and solidified during the Deccan Trap period. Over time, wind and rain eroded the surrounding land, leaving this huge rock standing alone. . . . #storytelling #gilberthill #andheri #views #mumbaikar"