Aalsum is a small hamlet in the Dutch

Netherlands

The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...

 province of Groningen

Groningen (province)

Groningen [] is the northeasternmost province of the Netherlands. In the east it borders the German state of Niedersachsen , in the south Drenthe, in the west Friesland and in the north the Wadden Sea...

. It is located in the municipality of Zuidhorn

Zuidhorn

Zuidhorn is a municipality and a town in the northeastern Netherlands. Due to a municipal reoganisation in 1990, Zuidhorn was extended when it merged with, though not physically connected to Oldehove, Grijpskerk and Aduard. It is a pleasant town, which depends largely on the city of Groningen...

, about 1.5 km west of Oldehove

Oldehove

De Oldehove is an unfinished church tower in the medieval centre of the Dutch city of Leeuwarden. It leans more than the tower of Pisa in Italy....

.

The hamlet was located on a wierde, an artificial dwelling hill. The hill was partially excavated in the 20th century; a bow from the ninth century was found. Plans to reconstruct the hill were canceled.

According to the 19th century historian A.J. van der Aa, Aalsum had 80 inhabitants in the middle of the 19th century; presumably, this includes the surrounding countryside.