Simien Mountains National Park, a UNESCO World Heritage site in Ethiopia, offers stunning landscapes and unique wildlife like the Gelada baboon and Walia ibex. Treks range from a few hours to multiple days, with varying difficulty levels. Accessibility can be challenging due to rugged terrain; hiring a local guide and scout is mandatory and enhances the experience. Solo trekking is not permitted. The best time to visit is during the dry season (October to May) for clearer views and easier trekking. Expect to pay park entrance fees, guide fees, and accommodation costs, which can add up depending on the length of your trek and comfort level. A typical visit lasts from 3 to 7 days to fully appreciate the park's beauty.