The 7 Principles of Leave No Tra

The items we find in nature have a role to play, either in the ecosystem or the story of the landscape. Leaving what we find in place helps to preserve both. Allow others a sense of discovery by leaving rocks, plants, archaeological artifacts, and other objects of interest as you find them.

The Basics:

• Preserve the past: observe cultural or historic structures and artifacts, but do not touch them.
• Leave rocks, plants, and other natural objects as you find them.
• Avoid introducing or transporting non-native species.
• Do not build structures, furniture, or dig trenches.

introduce

to bring a plant, an animal or a disease to a place for the first time

The grey squirrel was introduced into Britain from North America.
灰松鼠是由北美引入英国的。

trench

/trentʃ/

a long narrow hole dug into the surface of the ground
壕沟；沟渠