Friends of Copperfield Nature Trails likes these principles.
https://lnt.org/why/7-principles/
Link above goes into more depth and is from the Leave No Trace, Center for Outdoor Ethics
- Plan ahead and prepare
- Travel on durable surfaces (stay on designated trail)
- Dispose of waste properly
- Leave what you find
- Minimize fire impact
- Respect wildlife
- Be considerate of other visitors