The largest single reason for disappointing travel experiences is the failure to plan properly.

Autos for years seemed to give us freedom and independence, but when they create traffic jams and other problems in the parks, the experience of serenity in nature that visitors expect is seriously diminished, if not destroyed.

A national park is not a playground. It's a sanctuary for nature and for humans who will accept nature on nature's own terms.

I don't know of a single park without serious environmental problems.