Mount 'Orohena, French Polynesia's highest peak, offers an extremely challenging and remote multi-day trekking experience for highly experienced hikers. Accessibility to the base typically requires specialized 4x4 vehicles, and the ascent itself involves navigating dense, often unmarked terrain, making guided expeditions almost essential; solo attempts are strongly discouraged due to the difficulty and potential dangers. The best time to visit is during the dry season (May to October) to avoid heavy rains, mud, and reduced visibility which can make conditions impassable. Costs are primarily associated with hiring experienced local guides for a 2-3 day trek, which can be significant, as there are no entrance fees. The typical visit duration for a summit attempt spans two to three days, requiring significant physical endurance and preparedness for primitive camping. This is an adventure for those seeking a true wilderness challenge rather than a casual tourist attraction.