Susiluola (Wolf Cave) is a crack in the Pyhävuori mountain. The upper part of the crack has been packed with soil, forming a cave. In 1996, some objects were found in the cave that brought about speculations that it could have been inhabited in the Paleolithic, 120,000 to 130,000 years ago. These objects, if authentic, would be the only known Neanderthal artifacts in the Nordic countries. However, there is disagreement as to whether Neanderthals actually settled in the cave.
Archaeologist have found about 200 artifacts, some 600 pieces of strike waste, scrapers and bolt stone, and heated stones from an open fire. The objects are made of various materials, including siltstone, quartz, quartzite, volcanic rock, jasper and sandstone; as siltstone and quartzite don't occur naturally in the area, at least some of these must have come from elsewhere.
The ground in Wolf Cave consists of at least eight layers, of which the fourth and the fifth are the geologically and archeologically most interesting. The stone material that has been found appears to have been worked with several different techniques - tools of stone with good processing structure, such as fine-grained quartzite and red siltstone, have been worked in a way that is typical of the Middle Paleolithic, probably from the Mousterian era, while quartz, other quartzite, and sandstone have been worked with the earlier Clactonian technique.
Large quantities of bones from mammals and their prey have also been found, mostly in the upper layers of the cave, though it is not certain that any of the bone material dates from before the last ice age.
Due the research work and falling boulders the public does not have access into Wolf Cave, but there is a walking trail about 1 kilometre long from the Tourist Center to Wolf Cave. The trail takes you past a rock garden, a bronze-age burial site and a "devil's field" (a moraine). The Wolf Cave Tourist Center is located on Paarmanninvuori hill in Karijoki, about two kilometres from the downtown area of Karijoki in the direction of Kristiinankaupunki. The Wolf Cave Tourist Center is open daily during the summer months.
References: Wikipedia, official web site
Towering 52 meters above the sea, Bengtskär lighthouse is the tallest one in Scandinavia. The building started in in 1905 after the shipwreck of S/S Helsingfors and was completed in 1906. The lighthouse was designed by architect Florentin Granholm. On December a special petrol lantern, designed and built in Paris, was brought to Bengtskär and installed atop the tower.
German fleet bombarded Bengstkär in the First World War in 1914. Since the Gulf of Finland was heavily mined, it was not until 1919 that the surrounding seas were declared safe for shipping, that the light was lit again.
After the war the military value of Bengtskär increased as part of the defence system of independent Finland. In Second World War (1941) Soviet Union made a suprise attack to island. After a bloody battle, the small Finnish garrison emerged victorious. Intermittent repairs to the facility continued during the post-war period.