Travel to Terkhiin Tsagaan Nuur

Around 8,000 years ago, the Khorgo cinder cone erupted in what would be Mongolia’s last significant volcanic event. Molten lava flooded the valleys below, damming the Terkh River and creating Terkhiin Tsagaan Nuur—a freshwater lake that stretches 16 kilometers at an elevation of 2,060 meters. The name translates as ‘Great White Lake,’ earned from the months it spends frozen beneath winter snow from late October to mid-May.

Today, ten rivers feed this 61-square-kilometer lake, yet only the Suman River—meaning ‘Arrow’ for its swift flow—escapes through volcanic rock to join the Chuluut. The lake reaches 20 meters at its deepest, though 40 percent remains shallow enough for wading birds to feed. Pike, lenok, grayling, and taimen swim these exceptionally clear waters, while Nuuriin Tolgoi island rises from the center—a nesting sanctuary for cormorants and other waterbirds that Mongolian legend says was created when a hero shot an arrow to cap an overflowing well.

Khorgo rises 120 meters above the surrounding lava fields, its summit crater measuring 180 meters wide and plunging 80 meters deep. At 2,210 meters elevation, the volcano offers commanding views across the national park—773 square kilometers of protected wilderness established in 1994, though Khorgo itself has been safeguarded since 1965. Stone steps now lead visitors to the crater rim, where they can walk the circumference and peer into the abyss where clouds of steam still occasionally escape from crevices, freezing in winter into formations that resemble distant sheep.

The surrounding lava fields preserve remarkable geological features. Solidified lava bubbles form structures locals have named ‘basalt yurts’ for their resemblance to traditional felt dwellings. Caves riddle the volcanic rock, including the ‘Stone Ger’ cave and an ice cave that remains frozen year-round. About 33 smaller extinct volcanoes dot the surrounding landscape, their craters sometimes holding tiny crystal-clear lakes. Siberian larch forests blanket Khorgo’s northern slopes, sheltering wolves, red deer, musk deer, and wild boar.

The wetlands surrounding Terkhiin Tsagaan Nuur earned Ramsar Convention recognition in 1997 for their international importance—over 6,000 hectares of marshes, bays, and peninsulas that shelter migratory birds along the East Asian-Australasian Flyway. Bar-headed geese, ruddy shelducks, great cormorants, and northern lapwings breed here, while endangered species including the swan goose, saker falcon, and great bustard find refuge. BirdLife International designated this one of Mongolia’s 70 Important Bird Areas.

Thirty kilometers east, the Chuluut River has carved a dramatic gorge through the same volcanic basalt that created the lake. Walls plunge 60 meters to the water below, continuing for nearly 100 kilometers through landscapes adorned with Neolithic and Bronze Age rock paintings depicting hunters, ibex, deer, and masked figures. Medicinal springs rich in hydrocarbonates and sulfates emerge from the canyon walls, while the river itself teems with fish from the Selenge basin. CNN recognized Terkhiin Tsagaan Nuur as one of the world’s best destinations in 2011—a testament to volcanic drama meeting alpine serenity in Mongolia’s heartland.