Sangkulirang Mangkalihat Karst is located in East Kutai, East Kalimantan. Like other karst areas, the location of Sangkulirang Mangkalihat is surrounded by steep walls, underground cave with exotic natural carved and green hills. The beauty of giant karst group extends from East Kutai regency to Berau regency. There are tens of caves at Sangkulirang Mangkalihat Karst complex, which are rich of pre-historical heritages. The karst complex reaches 1.8 million hectares. The complex has 550,000 hectares of the main eco-system area. According to the research, the karst complex gives information on traces of ancient human beings which can be seen from hands’ paintings, boat pictures and paintings of various kinds of animals on the walls and people say it has existed since around 10,000 years BC. When being explored, Sangkulirang Mangkalihat Karst complex has some parts on tens of caves which have long valley with natural ornament and amazing stalactite and stalagmite. If you depart from Samarinda, the capital city of East Kalimantan, it takes around 8-9 hours by land transportation.