Gibney Dance's fall season concludes with a bang—or possibly a strange,ululating cry. After the triumph of her weirdly magical Otro Teatro, luciana achugar returns with its epilogue, Church, which looks to the ancient, ritual roots of dance in a quest for collective healing. The Bessie Award–winning, Uruguyan dancemaker's event continues for four to five hours, but audiences are welcome to enter and exit at will; if you need a break from the intense rite of passage, you can go get fresh air at will.