Beth She’arim was a cemetery located in Galilee. In 1956 it was decided to convert the cave into a small museum. A bulldozer was taken in to clear the rubble and level off the surface. But, unexpectedly, the bulldozer bumped into something large—so large, that it wouldn’t even budge. It turned out to be a large, rectangular slab that looked like concrete. Because of its size, it was left where it was, and the surrounding area was paved over with flat stone.