Koli is a hill by the lake Pielinen in municipality of Lieksa in eastern Finland.

[2] Koli's cliffs have received their characteristic smooth, rounded shape during the ice age.

[4] (Names refer to the God of Sky, Ukko, the Female Spirit Akka, the Evil Spirit and the Little hill, respectively) Koli has inspired many painters and composers, notably Jean Sibelius, Juhani Aho and Eero Järnefelt.

Eero Järnefelt painted a large scene together with Alfred William Finch and Ilmari Aalto in 1911, which can be seen in the Helsinki railway station restaurant.

Painters discovered Koli in the 19th century and it has been called one of the national sceneries of Finland.