For 6 years, I worked as a ranger in state and national parks. I always saw visitors making the same 5 mistakes.

As a former park ranger, I know there are lots of mistakes visitors should avoid making at state and national parks. Danielle Jackson I spent several years working as a park ranger at US state and national parks. During this time, I saw guests make mistakes when visiting, like assuming they'd have cell service. Many guests also strayed from marked trails and came unprepared for hikes.  I've always been fascinated by state and national parks. Growing up, I visited places like the Grand Canyo...