A benign if rather simple-minded inquiry into the nature of time when through an inexplicable crack, manifestations (a lance-head, a sword-hilt, a limestone block) fall from the back of beyond. In fact the Crusades. Three men, neighbors, watch and wait and speculate during the nightly vigils for further sounds and scents and eventually put an end to it by building a wall to plug up the fissure. . . . Since nothing comes out of this notion you have every reason to conclude that it's quite artifactitious.