Lunana

Lunana is the most isolated inhabited region in Bhutan, a scattering of villages tucked among glaciated peaks in the far north of Gasa dzongkhag. There is no road of any kind — the only way in or out is on foot, over a string of high passes, which is why Lunana forms the second half of the Snowman Trek, widely considered one of the most difficult treks in the world.

Villages such as Thanza, Toencha, and Chozo sit above 4,000m, surrounded by some of the Himalaya's most striking, rarely-photographed peaks, including Gangkhar Puensum, the world's highest unclimbed mountain, which lies just to the east. Life here revolves around yak herding and a short growing season, largely unchanged by the passage of the outside world.

Lunana gained international attention through the Oscar-nominated Bhutanese film Lunana: A Yak in the Classroom, which was shot on location in the region's Lunana Lhakhang school and brought its stark beauty and profound remoteness to a global audience for the first time.

Lunana has no road access whatsoever. It is reached only via the Snowman Trek, typically 3 weeks or more of trekking from Paro across a succession of passes above 5,000m — one of the longest and most demanding treks anywhere in the world, requiring serious preparation and full logistical support.

Late spring to early summer (June) and autumn (September–October) are the only realistic windows, and even then the Snowman Trek has one of the lowest completion rates of any trek due to weather and altitude. This is an expedition-grade undertaking, not a casual add-on to a standard itinerary.