At first glance, Wyoming's Kane Cave exhibits few characteristics of the world's most picturesque caves—it lacks mineral deposits, including stalactites and stalagmites, which decorate most cave ceilings and floors. Although the cave is not small, it pales in size against more massive ones, like those of New Mexico's Carlsbad Caverns. However, it is not its size that draws scientists to Kane Cave, but another compelling aspect of the cave. In this video segment adapted from NOVA, watch as scientists conduct a simple experiment to determine whether microbes that inhabit the cave could actually be contributing to the cave-formation process.