As you are planning your visit, it is very important to note that winter at Lassen Volcanic involves risk. Make safety your priority by being prepared and aware of the risk involved with your selected activity. Learn more about safety considerations by activity below or select a document to help you prepare.
Manzanita Lake Winter Routes Guide (pdf, 424 KB)
Are You Ready for Winter Conditions?
Did You Know?
The reddish color sometimes observed on top of snow at Lassen Volcanic NP snow is a living organism called snow algae. When snow begins to thaw, these microscopic organisms spring to life. They function as a primary food source and are being studied for their cancer-fighting properties.