Furthest north in the island community Rongevær, at the entrance to Fensfjorden, lies Krossøy. Belonging to the farm are the islands of Krossøy, Husøy, Kårøy, Lyngkjerringa, Søre Kjerringa, Rotøy and Kuhovet. All of them have been inhabited. On Krossøy itself today there are four holdings. The marine use environment here is one of the best preserved along the West Norwegian coast.
The fishnet shed at Notaholmen stands as a reminder of the days when people used to row out on the fjord to set their nets. On Notaholmen the nets were dried, repaired and tanned. And it was a great advantage to store them in a place inaccessible for rats and mice.
In one of the frame-built haysheds at Nottveit, at holding No. 3, we discover that several of the staves have a medieval look, with large dimensions and carefully rounded edges. According to tradition, it was the farms Nottveit and Mostraumen that supplied the timber for the stave church at Mo, and it is not unlikely that these farms received the old timber in return when the new church was erected there in 1593.
Tthe Otterstad farms lie in the innermost part of Mofjorden, on the northwest side of the river. The row of stave-built boatsheds that belong to the farm were probably constructed a little after the middle of the 1800s. Both here and on the Mo side, the boatsheds were important storage places at the seashore; wood and other farm products intended for the town; corn and merchandise in return.