Koli, Hill summit in Lieksa, Finland.
Koli is a mountain range in Lieksa with a summit reaching around 347 meters above sea level and distinctive white quartzite formations. Large treeless areas offer views over Lake Pielinen, and the terrain descends through different elevation levels.
The Karelian fold mountains that form Koli were created about 1.8 billion years ago through plate tectonics. Millions of years of erosion have gradually reduced these peaks to their current heights.
The four connected summits carry names from Finnish mythology: Ukko for the Sky God, Akka for the Female Spirit, Paha for the Evil Spirit, and Pieni. These names shape how locals and visitors perceive the landscape and tie it to ancient traditions.
An extensive network of marked trails spanning over 100 kilometers guides visitors through different elevation levels. The routes work well for summer hiking and winter sports activities.
The nearby Lake Pielinen freezes during winter months and provides Europe's longest official ice road for vehicles. This frozen route connects otherwise separated locations across the ice.
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