Trails listed as strenuous should be taken only by people in good physical condition. Rules and Regulations Crater Lake National Park is a special place and a federally protected area. Conditions within the caldera are extremely dangerous. The Cleetwood Trail is the only safe and legal access to the lake's shore. Dogs and other pets are not allowed on park trails.
Pets often threaten small wildlife.
Even well-behaved domestic pets leave scents that disturb the local wildlife. The park has also had many incidents of lost or injured pets who escape from their owner's control. Smoking is not allowed on any trail. Bicycling is permitted only on paved roads and the Grayback Drive. Feeding wild animals, including birds, is prohibited.