Grassy Swale             Lower Twin Lake               Summit Lake

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We hike the trails of Lassen National Park and Caribou Wilderness.  Our maps are free to you, the hiker.


Sacramento Valley
Hiking Conference


Grassy Swale loop

season:  mid Aug-Oct (snow Nov-June, mosquitos July, high water until mid Aug)

length:  13.4 miles

elevation gain:  1450'

elevation range:  6000-7200'

rules: Lassen National Park

trailhead map

hike map


current weather forecast

An excellent long loop hike through varied terrain.

Two fords of the largest creek along the Lassen hikes provide some excitement, but be careful, flowing water can be dangerous.  The crossing at the 3-mile point is probably the harder one, and gives you a chance to turn back if the water is too high.

The namesake Grassy Swale is a special treat to Pacific Crest Trail hikers more accustom to dry ridges and stiff climbs, it is lovely, green, gentle, and water-blessed.

Twin and Swan Lakes aren't too bad either :-)