The day was comprised of Mass in the glass chapel, a procession into the grotto, and lunch/reception in the valley below the log cabin. I was told that the pilgrims also perform native folk dance, but I either missed that when I went to a seperate Mass or it happened after we left.
One of the groups of teenagers that were eating separately from the large gathering, told us that everyone there was originally from the Cabanaconde village of the Peruvian highlands. Everyone seemed to know and really like each other. It definitely had the feel of a family reunion. A family reunion of people who were very accepting of me, a total stranger, taking pictures of the festivities.