Spend up to four days exploring the Orou Sapulot area and you’ll pack in rugged limestone climbs, hidden waterfalls, prehistoric caves, and scenic river crossings to the Kalimantan border: start with a guided ascent of Batu Punggul to scramble its dramatic karst faces and enjoy panoramic views of the surrounding rainforest; cool off beneath the plunging Kabulongou Waterfall and picnic on polished rocks before hiking along jungle trails to spot birds and primates; venture into Pungiton Cave with a local guide to see stalactites, underground streams, and evidence of ancient habitation; and on your final day take a longboat ride down winding rivers lined with nipa palms and kampung settlements, crossing at a gentle pace to the Malaysian–Indonesian frontier while learning about riverine trade and local livelihoods—accommodations range from simple homestays to pitch-tent sites, and experienced guides can arrange climbs, caving gear, longboat transit, and cultural visits to make the most of a compact, adventure-filled itinerary.