Mount Karthala is an active volcano and the highest point in the Comoros, offering challenging but rewarding hiking opportunities. Due to its rugged terrain and potential volcanic activity, accessibility can be difficult and is not recommended for those with mobility issues. Solo visits are strongly discouraged; guided tours are highly recommended to ensure safety and navigation. The dry season (May to October) is generally the best time to visit, as the rainy season can make trails treacherous. Costs vary depending on the tour operator and duration of the trek, but expect to pay a moderate amount for a guided excursion. A typical visit to the summit can take 1-2 days, requiring camping overnight. Always check for updated volcanic activity reports before planning a trip.