Three Country Cairn is the point at which the borders of Sweden, Norway and Finland meet. It is an example of a geographical feature known as a tripoint. It is the northernmost international tripoint in the world.

It is named for the monument of stones erected in 1897 by the governments of Norway and Russia (which was administering Finland at the time). The Swedish could not agree on a boundary commission with the Norwegians and did not contribute their stone until 1901. This is Sweden’s most northerly point and it is the westernmost point of the Finnish mainland (the most westerly point of Finland is on the island Market).

The tripoint monument itself is a yellow dome-shaped stone made of concrete, located about 10 metres (33 ft) out in Lake Goldajarvi (also known as lake Koltajauri).

It is located at 489 metres (1,604 ft) above sea level. The size is about 14 square metres (150 sq ft) with a diameter of about 4 metres (13 ft). As an artificial island, it is sometimes mentioned as the world's smallest island divided by a border.

The monument was built in 1926. The size is about 14 square metres (150 sq ft) with diameter of about 4 metres (13 ft). It is reached by walking 11 kilometres (6.8 mi) from Kilpisjarvi in Finland on a public road. In summertime, it can be reached by boat from Kilpisjarvi plus a 3 kilometres (1.9 mi) walk.

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