Pumice Desert
Pumice Desert is a dry meadow in Crater Lake National Park. It covers and is located along the North Entrance Park Road. Pumice Desert was a glacial valley before the eruption of Mount Mazama 7,700 years ago. The valley was buried in over of pumice and scoria during the eruptions and subsequent avalanches. The area was designated as a Research Natural Area due to the environment's harsh, "desert"-like quality resulting from the deep and highly porous deposits. There are currently only 16 species of plant documented in this area.