SumatraNorth Sumatra itinerary and complete guides to Lake Toba, Orangutan Spotting, Sibayak Volcano & Sipiso Piso Waterfall. Lake Toba, Sumatra: Complete Travel Guide to Samosir Island What to do, where to stay and when to visit the beautiful volcanic lake North Sumatra Travel Itinerary: Where to Go & How Long to Stay How to experience the best of North Sumatra, Indonesia Asu Island Travel Guide: 12 Days in Paradise How to visit Asu Island outside Nias, Sumatra for non-surfers Sibayak Volcano Sunrise Trekking Guide: All You Need to Know How to visit Mount Sibayak volcano near Berastagi in North Sumatra Sipiso Piso Waterfall Travel Guide: All You Need to Know How to visit Sipiso Piso Waterfall near Berastagi in North Sumatra Orangutan Jungle Trekking in Bukit Lawang: Complete Travel Guide How to ethically spot orangutans in the wild in North Sumatra, Indonesia