The topographic isolation refers to the shortest horizontal distance one would have to travel to find a higher summit.
There are also several peaks in Dovrefjell, Rondane, Dovre, Lesja, and Folldal that also reach above 2000 meters.
The northernmost is in the Dovre area, meaning there are no 2000 m peaks in northern Norway, even though there are some almost 2000 m there, and some above 2000 m in Sweden near the border.
Most of the difficult summits were ascended in the late 19th and early 20th century by a combination of Norwegian explorers, local guides (in particular the Sulheim family), and British adventurers.
Five women – "Margaret S. Green", "Theresa Bertheau", "Antonette Kamstrup", "Anne Aukrust", and "Rønnaug Garmo" – were the first to ascend some of these peaks.