 In 1924 , there was a landslide at Høga , covering the area planned for the railway . The area was made of phyllite and was the geologically most unstable area on the route . The initial response was to plan for a tunnel past the area , but this was quickly rejected because of the high price . Instead , the line was moved further away from the mountain side . Other slides during construction included an avalanche near Store Reppa on 10 February 1925 , which deposited up to 3 @.@ 5 meters ( 11 ft ) of earth . In April 1925 , a 1 @,@ 000 cubic meters ( 35 @,@ 000 cu ft ) landslide took place above Berekvam . On 8 February 1928 , an avalanche did some damage to the right @-@ of @-@ way near Nåli . 
