The journey begins in Dumai City, Riau Province, departing at night and taking approximately 11 hours to Karo Regency, North Sumatra Province. On the first day, we'll climb Mount Sibayak and spend the night at the summit. The next day, we'll climb Mount Sibuatan and also spend the night at the summit. After descending the mountain, we'll return via Medan City, North Sumatra Province, where we'll do some sightseeing. Then, we'll return to Dumai City, Riau Province.