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Salvatnet is a lake north of Namsos. While barely above sea level, this is the second deepest lake in Europe at some 470 meters. Some 3000 years ago this was still a saltwater fjord but was then separated from the ocean during the post-glacial rebound. Salt water in the lake got trapped in the deepest part of the lake and is still there as a separate layer that does not mix with the freshwater above.
Salvatnet is a lake in Namsos Municipality in Trøndelag county, Norway. With its deepest depth of 482 metres (1,581 ft), it is Norway's and Europe's second-deepest lake, after Hornindalsvatnet. Alternate sources give the depth as either 464 metres (1,522 ft) or 482 metres (1,581 ft) at the deepest point. The lake sits close to the Norwegian Sea, about 9 metres (30 ft) above sea level at the surface and reaches to a depth of 473 metres (1,552 ft) below sea level. It is a large lake with an area of 44.96 square kilometres (17.36 sq mi), a volume of 6.97 cubic kilometres (1.67 cu mi), and a shoreline that is 105.61 kilometres (65.62 mi) around.
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Namdal Museum
Cultural history of the area. Guided tours every hour.
Bjørumsklompen
Walk to this 114 m (374 ft) high viewpoint overlooking the whole town. It's an easy 20 min walk from the church but you can also drive to the top.
Art museum
A center for rock and pop music, established by parliament. The building also houses the tourist office.
Namsos Church
This large, rectangular, brick church, designed by architect Ola B. Aasness and seating about 622 people, was built in 1960 to replace the previous one, which was bombed and burned during World War II. It also has a free-standing bell tower, on the south side of the main building.
Norwegian Sawmill Museum
Tells the history about the Norwegian sawmill industry. This was, around the start of the 19th century, one of Norway’s largest industries with several hundred steam powered sawmills, one of which is the base for this museum. The mill is still occasionally used today to produce high quality replicas for restoration projects. Also at the museum is the M/B "Hauka", a 1934 ship used for towing logs to the mill in summer, and icebreaking in the winter.