The Lost Creek Ridge trail heads generally west. It winds 1.25 miles from Camp Lake, ascending briefly, then dropping 200 feet as it curves to Hardtack Lake. It's then a series of ups and downs, mostly through heather and rock, sometimes in trees, all the way to Round Lake. There are a couple campsites along the trail, west of Camp Lake. The first is in heather and grass, 1.0 mile past Hardtack Lake, west of the long ridge jutting beyond the lake.
Views diminish after Camp Lake.
Mostly you're looking north at unremarkable Meadow Mountain and the blight of a logging road leading to it. From a gap west of Hardtack Lake, you do attain open views southeast to the glaciers on Black Mountain and east to Glacier Peak. Soon after Hardtack Lake, the trail stays closer to the ridgecrest but becomes narrower and less defined. Sometimes it's no wider than the length of a boot, though it is always distinguishable. In places it's on very precipitous slopes, so avoid hiking here in times of limited visibility.