Rajalouhikko

Rajalouhikko is a geological formation found in Finland, characterized by its unique rock type and geographical distribution. The term "Rajalouhikko" is Finnish and translates roughly to "border boulder field" or "boundary rubble field," suggesting its association with geological boundaries or areas with scattered large stones. These formations are often found in the eastern parts of Finland, near the border with Russia.

The bedrock in these regions typically consists of ancient, crystalline rocks such as granite and gneiss. The Rajalouhikko formations are not smooth, continuous rock surfaces but rather areas where the bedrock has been fractured and weathered over long periods. This process, often influenced by glacial activity and subsequent erosion, results in a landscape dotted with numerous large boulders and fragmented rock. The size and density of these boulders can vary considerably within a Rajalouhikko area.

These areas are important for understanding the geological history of the Fennoscandian Shield. The composition and structure of the Rajalouhikko formations provide clues about the tectonic forces and environmental conditions that shaped the region over millions of years. While not extensively mined for resources, these areas can sometimes be studied for their mineral content and geological significance. The terrain can be challenging to traverse, often covered in moss and undergrowth, blending into the surrounding natural landscape.