Mattopohja
Mattopohja is a small, uninhabited island located in the Gulf of Finland, part of the Baltic Sea. Situated approximately 15 kilometers northeast of Helsinki, Finland, it belongs to the municipality of Porvoo. The island covers an area of around 0.3 square kilometers and is characterized by its rocky coastline, dense forests, and limited vegetation.
Historically, Mattopohja has been used primarily for agricultural purposes, particularly as a grazing area for livestock.
Today, Mattopohja is a protected nature reserve, managed to preserve its natural ecosystem. The island is accessible
Due to its secluded nature, Mattopohja remains relatively unknown outside of Finland, though it is occasionally