IGS Local Chapters of Maharashtra, namely Mumbai, Pune, Sambaji Nagar, Nagpur and Amaravati came together and organized a grand 2-day event ‘Mahafest’ to mark the 75 years celebration of establishment of Indian Geotechnical Society. The event was held on 12^th and 13^th September, organized by IGS Pune Chapter in lead, supported by other local chapters, venue was MIT WPU, Kothrud, Pune. Focus of the event was on ‘Tunnelling and Underground Structures’ with experts delivering interesting and informative lectures. More than 400 students from various parts of Maharashtra attended and it was noteworthy to mention that more than 50 female students out of Pune participated in the event. Competitions for students were held which included Pick and Speak, Poster competition, Quiz. Prizes worth Rs 75,000/- were distributed, winner certificates, participation and volunteer certificates were given to encourage the students and recognise their participation. The hosts were glad to welcome IGS President, IGS Secretary, Past President IGS, Chairman and Secretary of IGS Mumbai Chapter and Sambaji Nagar Chapter and other eminent guests for the event. The Chief Guest for inaugural session was Mr Sanjay Gupta, MD of KRCL, Guest of Honour for the day, Shri Atul Gadgil, Director Works-Mahametro.