HomeUSAWashingtonNorthwest RegionHwy 20 and North Cascades National ParkNorth CascadesBoston BasinSharkfin TowerSoutheast Ridge5.05.10-tradalpineFA Jim Nelson, Jim Martin, Kit Lewis, Bill Liddell, Dave Bale - 1990UPDATED BY vietnguyen Tick this climbDescriptionRoutes in Sharkfin Tower1Southeast Ridge5.0Trad · Alpine2Southeast Face5.10-Trad · Alpine