Small mammals and rodents such as pack rats and raccoons frequently put their nests in caves if organic debris is plentiful and there are handy routes to the surface. In caves where the water is relatively clean and clear, you will also find crawfish and small fish. These aquatic cave creatures are often solid white and eyeless, because neither color nor sight is needed in the absolute blackness of the cave environment. Furthermore, cavers should always try to disturb the animals they encounter as little as possible, even if it means going to extra trouble and discomfort. To learn more about animals that live in caves, visit the Biospeleology web site.
Every cave is different, so every cave is a different adventure.
Factors such as the location and quantity of water sources, the structure and composition of rock layers, and the proximity of fractures and fault zones all work together to produce many variations in how a cave is formed. Each cave is unique. In general, you can expect to see lots of rock and mud or sand, depending on whether the cave is dry or wet. Many caves have beautiful, multicolored rock or mineral formations or exhibit sculpting caused by the movement of underground streams over time. These items should be left as found to preserve them for others to enjoy.