Before you attempt to find this cache, please prepare properly for a pretty serious day hike. The map I use for this area is by, Green Trails, Mt. Baker, WA - No. 13. Also, the guide book called, "100 Hikes in Washington's North Cascades National Park Region", has a description on p. 36, hike #4.
You will need to stop at the Glacier Park Service Center, located at N 48°53.302, W 121°56.288, for a $5 vehicle parking day pass. You can also get current info about the trail and some assistance in getting to the trailhead from the ranger while there.
Here are some descriptions from the 100 hikes guide book and some of my own added. Round trip from Canyon Creek road 5 1/2 miles, hiking time 4 hours, high point 5712', elevation gain 1435', hikable mid-July through September. I did it a bit early, 7/6/01, and the hike was mostly in the snow. I don't recommend doing it this early. I have been here before and am familiar with the surroundings. I stayed over night, and the snow froze pretty hard, and I didn't bring crampons. Big mistake.
Views from this meadow summit include Nooksack valley forests and Puget Sound lowlands, Mt. Baker and the Border Peaks, the southernmost portion of the British Columbia Coast Range, and more. Flowers in Mid July, berries and colors in September. Three trails lead to the site of a long-gone lookout cabin; the easiest and most scenic is described here.
Drive Highway 542 to the town of Glacier and 2 miles beyond to Canyon Creek road No. 31. N 48°54.279, W 121°54.662. Turn left 15 miles to the parking lot in a clearcut at the start of trail No.625; elevation, 4277'. N 48°57.535, W 121°48.430. The first 7-8 miles of Canyon Creek Rd. are paved. When you get to the sign that says, " Pavement Ends", N 48°57.997, W 121°53.725, the road splits. Stay left. When you get to N 48°57.782, W 121°49.232, the road splits again. Stay left.
From the trailhead, climb gently through forest 1/2 mile to the junction with Canyon Ridge trail No. 689. Stay right to Damfino Lake, two small ponds surrounded by acres of super-delicious blueberries (in season). I heard a story on how this lake got its name. Way back when, someone was hiking through this area and another person asked, "what is the name of this lake", and the first peson said, "Damfino", and it stuck.
Climb another timbered mile, then go up a narrow draw and shortly enter meadows. Cross a notch, sidehill forest, then broad meadows, rising in 1/2 mile to 5375-foot Excelsior Pass, some 2 1/2 miles from the road. Leave the main trail at the pass and climb a way trail 1/4 mile east to the 5712-foot peak. I think way trail means make your own way.
Sit and look. See the glaciers of Mt. Baker across forests of the Nooksack. See more ice on Mt. Shuksan and other peaks east. See the steep-walled Border Peaks and snowy ranges extending far north into Canada. And see green meadows everywhere.
The summit is a magnificent place to stop overnight in good weather, like I did, watching a sunset and a dawn; no water, though, except possible snow-melt.
The cache is a Rubbermaid container 6x6x2 inches with a cream colored lid.