The main feature of Capitol Reef National Park is the 100 mile long Waterpocket Fold, North America’s largest monocline. The name Waterpocket refers to the waterpockets and potholes along the white Navajo sandstone layer of the Fold, which hold water after rains. In days of past, before road access to the area, these waterpockets were a lifeline for travelers in the area and still serve as lifelines for the animal residents of Capitol Reef today. Of course, modern humans are encouraged to treat any water from these water sources, as multitudes of microogranisms live in the water, many of which can cause medical conditions in humans, such as giardiasis, also known as “beaver fever”.