All nature based activities are at your own risk. You will need sturdy hiking boots, bring extra clothing and be prepared for bad weather. Bring map and compass, plenty to eat and drink, a torch and a simple first aid kit. Weather in the high mountains can change quickly - check the latest weather forecast before going to Trolltunga. Do not hike to Trolltunga in strong wing, heavy rain or in foggy weather. It is always colder in the mountains than down by the fjord. Respect the nature.