The impact can be more subtle. Personally I’m more worried about the individuals who don’t know anything about conservation going into these areas. Usually the

The impact can be more subtle. Personally I’m more worried about the individuals who don’t know anything about conservation going into these areas. Usually the tour groups follow a set route, limiting their impact. The grand canyon likely prefers you stay in the disneyland of the south rim where there are park rangers, trashcans, bathrooms, shuttles, and roads, rather than hike offtrail in the canyon and damage the more pristine ecology found there.