This is both a religious and historical reenactment of what happened that day when the people of Antipolo took refuge at the hillside of Sitio Colaique now known as Sitio Loreland because it was less exposed topography. They carried with them "Our Lady of Peace and Good Voyage" thus the religious aspect to the event. This year marks its 71st anniversary.
I think the main reason why many of us haven't heard of Paglikas is because it is one that is low-profile. They have kept the event simple, as simple as mimicking the exodus that happened that day in World War II. More importantly, the successfully resisted commercializing the event and therefore keeping its identity. Keeping it simple and real.