Lastman, Pieter – De offerstrijd tussen Orestes en Pylades, 1614 Rijksmuseum: part 3

The picture has something of this: people, group, wear, veil, woman, dress, many, man, costume, dancing, ceremony, dancer, god, child.
Perhaps it’s a painting of a group of people standing in front of a fountain with a lot of smoke coming out of it and.