Söderfjärden Meteorite Crater
Pohjanmaa
Söderfjärden Meteorite Crater is a remarkable natural feature located about ten kilometers south of Vaasa in Finland. Formed approximately 520 million years ago, the crater spans about 5.8 kilometers in diameter and originally reached depths of around 300 meters. Today, the crater is filled with Cambrian sandstones, leaving visible only its forested outer rim and the distinct circular shape that marks its impact origin. Unlike many other known impact craters in Finland, Söderfjärden is not a lake or bay but a fertile, drained agricultural plain covering 2,300 hectares. The area underwent a significant drainage project completed in 1927, one of the largest in Northern Europe at the time, which shaped the crater's current landscape. Söderfjärden is also recognized as a nationally valuable landscape area by Finland's Ministry of the Environment and is famed for hosting large flocks of migrating cranes each autumn, with numbers exceeding 10,000 individuals. This makes it the most important resting site for cranes in Finland, attracting bird watchers and nature enthusiasts alike.
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Astuce: The best time to visit Söderfjärden is during the autumn migration season when thousands of cranes rest in the area, offering spectacular birdwatching opportunities. Visitors are advised to check local visitor center opening hours and consider guided tours to learn more about the crater's geology and natural significance. While entrance is generally free, some organized activities may require prior booking. Environmentally conscious visitors should respect the protected landscape and follow local guidelines to minimize disturbance to wildlife.
Faits intéressants
- •Söderfjärden is the only known meteorite crater in Finland that is not a lake or sea bay but a dry agricultural plain.
- •The crater's diameter is approximately 5.8 kilometers, with an original depth of about 300 meters.
- •Söderfjärden hosts the largest autumn gathering of cranes in Finland, with over 10,000 birds resting there during migration seasons.
- •The drainage project completed in 1927 was the largest in Northern Europe at that time.
- •The area is officially recognized as a nationally valuable landscape by Finland's Ministry of the Environment.
Histoire
Söderfjärden crater formed about 520 million years ago during the Cambrian period.
The idea to drain the marshy land resembling a mare was proposed as early as the 18th century.
The actual drainage project was completed in 1927, transforming the crater into the current agricultural landscape.
This drainage effort was the largest of its kind in Northern Europe at the time.
Later, in the late 20th century, environmentally friendly regulated drainage systems were installed to maintain the fertile farmland and protect the area's ecosystem.
Guide du lieu
Visitor Center
Located in the middle of the Söderfjärden crater, the visitor center provides educational exhibits about the meteorite impact, geological history, and local wildlife, including the famous crane migrations.