Shillong, Jun 21 (UNI) The 11th International Day of Yoga had an innovative and serene setting in Meghalaya this year, literally inside the heart of earth with the Geological Survey of India (GSI), Shillong, organising a Yoga camp deep inside the Arwah-Lumshynna Cave, a Geo heritage site in East Khasi Hills district The ‘Yoga Sangam’ drew 65 participants, including senior GSI officials, staff, and local residents, who performed Yoga against the backdrop of million-year-old limestone formations, fossil-rich walls, and the murmurs of cave stream with light rain and fog adding a mystical quality to the early morning practice.