Tough - This is where it gets serious. At this level we recommend previous experience of the activity involved, as conditions will be tough. You need complete confidence in your physical condition and your ability to participate in the activity, perhaps for long periods of time, over consecutive days or under difficult circumstances. Trips may experience high altitude, extremes of temperature, remoteness, long days or difficult terrain. Accommodation, although often good at the start and end of trips, can be basic (often camping) with few facilities. Tough trips represent the ideal grade for those experienced in adventure travel who want to push themselves out of their everyday comfort zone.