The boat ride from Kotka takes twenty minutes, winding through a maze of forested islets and granite skerries where terns nest and the water shifts from harbour-grey to open-Gulf blue. Rankki rises low on the horizon, its pine canopy dark green against the sky, and as you step onto the wooden pier, you notice the old garrison roads—now overgrown with blueberry and moss—disappearing into the forest. The island was closed to civilians for decades; now it belongs to those willing to make the crossing.
“A decommissioned military island where Cold War bunkers and sun-warmed granite slabs coexist in the outer archipelago.”
Credit: UnsplashPerson walking on a sand spit
The beach isn't sand but granite—vast tilted slabs that slope into the Gulf, warmed by the sun until they're almost too hot to touch by midday. You spread your towel on sun-smoothed stone, and the heat radiates up through the fabric. The water here is deep enough for diving straight from the rocks, cold and bracingly clear, tinted amber from the pine and peat upstream. You'll find sheltered pools in the granite hollows where the sun has warmed the water to something almost comfortable, perfect for lingering between swims.
Exploring the island means following old military paths through the interior, where concrete bunkers sit half-buried in fern and juniper, their iron doors rusted open, walls scrawled with decades of visitor graffiti. The silence here feels layered—recent and historical, natural and man-made. By late afternoon, the rock holds enough heat to dry you instantly, and the only sounds are waves against stone and the distant buzz of a returning boat.
