A fact from Sommen appeared on Wikipedia's Main Page in the Did you know column on 3 June 2019 (check views). The text of the entry was as follows:
Did you know... that one theory holds that aquatic cold-water species entered Sweden's Lake Sommen by a natural lock system at the end of the last ice age?
Sommen is within the scope of WikiProject Lakes, a collaborative effort to improve the coverage of lake-related articles on Wikipedia, using the tools on the project page. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.LakesWikipedia:WikiProject LakesTemplate:WikiProject LakesLakes articles
This article is within the scope of WikiProject Sweden, a collaborative effort to improve the coverage of Sweden-related articles on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.SwedenWikipedia:WikiProject SwedenTemplate:WikiProject SwedenSweden articles
