This perfectly formed chabazite crystal on volcanic rock comes from a cave called "Planruf", discovery site at "Pufler Loch" southwest of the hamlet of Bulla (Bula in Ladin). The mineral, named "Puflerit" after the hamlet, is a variety of stilbite with whitish-yellow, drop-like shapes, smooth and shiny on the outside, with a radiating pattern on the inside. 

There has been a church on this spot since the 13th century, and the Romanesque core of the tower was added to it. In 1555, this tower was replaced by a new one, which was lengthened towards the west and had baroque features added. The frescoes in the church, on the tower and at the cemetery chapel painted by J. Jenewein date back to the same time. The Austrian painter Jenewein died in 1745 from a fall off the scaffolding while painting the church in Bulla. The spire was mounted in 1855.