We absolutely regret it if you have to cancel a tour. Also, a fair amount of our costs are already made prior to a tour, therefore we have to invoice 25% up to 7 days prior to and 100% of the full amount if you cancel less than 7 days prior to a tour. We preserve the right to reschedule or cancel any of our tours due to adverse weather events and / or safety concerns; if it comes to that a full refund will be given.