In 1802, the ambitious project christened as The Great Trigonometrical Survey was started by Lt.Col. William Lambton to map the Indian Subcontinent. It took over 130 years to completely map it to inch perfection and even the height of Mt. Everest was calculated way before Edmund Hillary summited it in 1953. To tell us more about this fascinating survey we have with us Mr Udaya Kumar, a passionate Bengalurian & citizen historian-conservationist. He loves to research lesser-known aspects of the city's history. Other Platforms: https://linktr.ee/theoddcouplepodcast External Links & Contact of Mr Udaya Kumar Slide-show - https://rhz66.app.goo.gl/aAUSBgE67FvbUeFy6 Twitter: https://twitter.com/pluday Facebook: https://www.facebook.com/pluday Email id: [email protected] Show Credits: Hosts - Dr. Ashish Philip Zachariah & Siddhartha Unni Promo Voice-Over Artist - Ameera D'Costa Promo Editor: Elavenil M Photo by Monstera from Pexels