Borneo and Sumatra sit among the most biodiverse places on earth. ParkTours programs here centre on river safaris, rainforest walks and wildlife encounters in some of the region’s best-protected national parks. Kalimantan in Borneo offers proboscis monkeys, orangutans and pygmy elephants from the rivers and elevated platforms of Tanjung Puting. Sumatra adds the chance to spot wild Sumatran elephants and rhinos in Way Kambas.Groups are small and the pace is deliberate. These are not tick-box wildlife tours; the intention is to spend proper time in each area, walking where possible, watching from river boats, and staying in locally run lodges that are part of the conservation story.