The bridegroom, aged 14, stands in the centre, priests are sitting in front. Pictures of various gods and goddesses lie on the ground.
Photograph by Pandit Vishwanath.
There's a good chance that the photo depicts the thread ceremony of Pandits or Yagnopavit. It's the sahibaan, the tent, in the background that I found interesting.
Found it in: 'Kashmir in Sunlight & Shade: a Description of the Beauties of the Country, the Life, Habits and Humour of its Inhabitants, and an Account of the Gradual but Steady Rebuilding of a Once Down-trodden People' by Cecil Earle Tyndale-Biscoe (1922).