(67) Some of the long narrow reclaimed strips could extend even for a number of kilometres, as retained most clearly in the landscape in nearby Slochteren
. (68) As is well known from the classic literature on the colonisation of the Holland peat-lands, territorial lords such as the Count of Holland or the Bishop of Utrecht, looking to establish political footholds and a reservoir of taxes, bestowed these rights on peasant colonists.
gas fields in Groningen Province in the north are among the world's larger producing natural gas fields.
The discovery of the vast Slochteren
natural gas field in Groningen province in the Netherlands in 1959, and oil a decade later in the British and Norwegian sectors of the North Sea, not only represented large increases in the national wealth of these countries but also precipitated rapid growth in their energy sectors.