Lake Baikal

Nothing quite prepares you for the colour of Baikal's water in summer — a blue so deep and clear it appears almost turquoise when seen from shore, darkening to navy in deeper channels. The lake is not merely large; it is incomprehensibly large to someone raised on European lakes, stretching 636 kilometres from north to south with a maximum depth of 1,642 metres. The surrounding mountains, covered in Siberian taiga, frame the water on all sides, and on calm days the surface mirrors the sky so perfectly that horizon lines disappear and the lake becomes an extension of the atmosphere.

In winter the lake undergoes a transformation that few visitors anticipate. The surface freezes solid between January and May, creating a thickness of ice that is itself a spectacle: transparent sections allow you to see twelve or fifteen metres down to the lake bed, and pressure ridges up to ten metres high push up along fault lines, creating surreal frozen barricades along the shore. Driving across the ice in a Russian van to Olkhon Island is an experience that belongs in no ordinary travel catalogue — the ice groans and cracks, the surface shimmers with frozen bubbles, and the mountains on every side appear almost fictional.

The baikal seal, or nerpa, is the only freshwater mammal species entirely dependent on one body of water, and Baikal is its only home. The seals are visible on the ice in winter, hauled out on ice floes away from the shore, and small boat trips in summer occasionally spot them basking near the water's edge. The lake's endemic species extend far beyond the seal: the golomyanka fish is the only freshwater fish in the world that gives birth to live young rather than laying eggs, and there are dozens of species of freshwater sponge and snail found nowhere else on earth.

Olkhon Island, the largest island in the lake, is the spiritual centre of Baikal's indigenous Buryat culture. Cape Burkhan, a sacred site on the island's western shore, is associated with the shamanic traditions of the Buryat people and features a natural stone arch that serves as a portal in local religious practice. The island's terrain ranges from dense forest to bare steppe to dramatic limestone cliffs above the lake, and the village of Khuzhir is the main base for visitors, offering small guesthouses, horse rental and boat trips along the coast.

The Trans-Siberian Railway runs along the southern shore of the lake, and the section between Irkutsk and Slyudyanka is one of the most photographed stretches in the entire 9,000-kilometre route. Train passengers see the lake from a unique perspective — water, mountains and taiga scrolling past at a pace slow enough to absorb — and many tourists break their journey in Irkutsk specifically to make the short trip to the lake shore, returning to the city having glimpsed something genuinely otherworldly.

It holds twenty percent of the world's unfrozen surface freshwater and is the deepest lake on earth, a geological record of ancient lake systems unmatched anywhere else.

The ice formation in winter is a phenomenon found nowhere else at this scale — the lake produces its own climate and its own visual language each season.

The endemic biodiversity — baikal seal, golomyanka fish, dozens of invertebrate species found only here — makes Baikal one of the world's most important freshwater ecosystems.