This pano was shot during "The Coronation", the final scene of "The Mystery Play of Elche". This is a liturgical rehearsal that dates back to the Middle Ages and was proclaimed by UNESCO, in 2001, as a Masterpiece of the Oral and Intangible Heritage of Humanity.
This is a living example of religious theatre from Medieval Europe and represents the death, assumption and crowning of the Virgin Mary. The play has been traditionally produced and acted by amateur local citizens that have kept this custom alive for centuries.
The musical drama is divided into two acts ("La Vespra" and "La Festa") and is publicly performed on every 14th and 15th of August inside the Basilica of Santa Maria in Elche (see also WWP1208
The basilica is transformed every year to house this tradition and it is worth mentioning the ancient stage and aerial machinery that are used to create the special effects that help enhancing the play.
You may have a look here
for another pano taken the day before, during the "La Vespra" act, on the 14th.