The park offers many activities, most of which can be considered dangerous in some way. Always carry maps, extra food and clothing, a compass, water, and other emergency gear. Do not engage in any activities you are not thoroughly prepared for as any sort of rescue is improbable. Even the most benign hike can be deadly under extreme circumstances. Be prepared!
fees/permits
There are no fees to enter the North Cascades National Park. Spending the night in the back country does require a free permit obtained by registering at a ranger station. Campgrounds have variable fees, often dependent on the time of year and popularity of the campground.