Mount Ramelau, known locally as Tatamailau, is East Timor's highest peak and a significant pilgrimage site, offering breathtaking sunrise views. It is best visited during the dry season (May to November) when conditions are clearest and roads to the base village of Hato Builico are more accessible, though a 4x4 may still be beneficial. While experienced hikers might attempt it solo, hiring a local guide from Hato Builico is highly recommended for safety, navigation, and cultural insights, typically costing $20-50+. Visitors usually spend a night in Hato Builico before starting the 2-4 hour ascent in the early morning to catch the sunrise, making the overall visit a 1-2 day endeavor. Costs include transport, guide fees, and basic accommodation, potentially totaling $50-150+. Prepare for cold temperatures at the summit and respect the mountain's sacred status.