At first the field in Almenningur was only just big enough to feed two cows over the cold winter. To increase the richness of his farmstead, Teitur decided to enlarge the field and build a revetment to protect it from both animals and erosion. Inside this revetment, Teitur then added fertile soil and started growing his new field. Because of this new field, Teitur and his family were able to feed more farm animals and thereby increase their quality of life.

The revetment was a very large structure for that point in time. The wall itself was made of stones that each had to be collected, transported and stacked by Teitur and his family. In addition all the excavation work was done by very primitive tools. This achievement is a good example of how the general Icelandic farmer had to struggle to provide for himself and his family.