One Stone

One Stone (Finnish: Ykskivi) is an island in the District of Kingsland. It is located in the Gulf of Bothnia and in the municipality of Kingsland. The island is located about 110 kilometers south of Rovaniemi and about 600 kilometers north of Helsinki.

The island's area is 6 hectares and its maximum length is 490 meters in the south-northeast direction.

Monumental Lighthouse
The Monumental Lighthouse is located on the northeastern shore of the small island of One Stone. There is no light at the top of a wooden hexagonal 18.9-meter-high lighthouse, but in 1954 a small auxiliary slide was installed in an opening on its northwest wall. The monastery islet had a smaller sea mark even before the lighthouse.

The lighthouse was built in 1874. It's drawings were made by Architect F.W. Lüchou.