About Us
Rangga Trails Indonesia (RTI)
The Story Behind Rangga Trails
Rangga 'Angga' Mamengko
Founder / Guide / Photographer
My name is Rangga Mamengko, but most people call me Angga.
I grew up following my father — one of North Sulawesi’s senior tour guides and a professional photographer — long before I ever thought of becoming a guide myself. From him, I learned how to read landscapes, respect local communities, and move slowly in nature.
Through my father, I was introduced to Nurlin Djuni, or as I call him, Om Nurlin — the founder of Malia Tours Indonesia. Under his guidance, I learned the foundations of birding, expedition planning, and ethical guiding. Both my father and Om Nurlin encouraged me to eventually organize trips under my own name.
Rangga Trails Indonesia is the result of that encouragement — and of my love for birds, mountains, travel, and photography.
Why travel with Rangga Trails?
- Birding-first expertise in Sulawesi, Halmahera, and Indonesia
- Small groups, flexible pacing, and realistic itineraries
- Strong local networks built over years, not overnight
- A guiding philosophy based on respect, patience, and curiosity
Start you r Journey
Whether you’re planning a Sulawesi birding expedition, dreaming of Halmahera’s endemic birds, preparing for Carstensz Pyramid, or exploring North Sulawesi’s culture and nature, Rangga Trails is ready to guide you.
Let’s plan a journey that feels real — one where every trail tells a story.
Young Rangga started birding