Koigi Bog Complex

Koigi Bog Complex is a wetland area on Saaremaa island featuring multiple lakes, including Lake Pitkjärv, and diverse plant communities adapted to wet conditions. The landscape consists of open bog zones, forested wetlands, and transition areas that create a varied ecosystem.

The bog complex formed over thousands of years through natural processes, accumulating deep peat layers that preserve geological records of Estonia's climate and plant history. These deposits reveal how the landscape changed following the retreat of ice age glaciers.

Local Estonian folklore includes tales of buried treasures within the bog lake, where spirits are said to reveal themselves to those who visit.

A marked trail of about 5.7 kilometers winds through the area with information boards, wooden walkways, and viewing platforms. A nine-meter observation tower offers views across the entire bog and surrounding landscape.

The area contains the largest bog system on Saaremaa island, home to plant species specially adapted to nutrient-poor and acidic conditions. These specialized organisms thrive where most plants cannot survive.