April Fool's Day Explore Snowpatch Buttercup (Ranunculus eschscholtzii) Mount Robson and Robson Glacier Eastern Fairy Slipper (Calypso bulbosa var. americ… Western Pasque Flower (Pulsatilla occidentalis) Mount Robson, Berg and Mist Glaciers and Berg Lake… Sparrow's Egg Lady's Slipper (Cypripedium passerin… The Hikers Macloskey Violet (Viola macloskeyi) Fireweed (Epilobium angustifolium) Hargreaves Glacier and Hargreaves Lake The Hikers Mount Adams Hooded Ladies'-Tresses (Spiranthes romanzoffiana) Hooded Ladies'-Tresses (Spiranthes romanzoffiana) Elephant's Head Lousewort (Pedicularis groenlandic… Mount Adams from Muddy Meadows Hooded Ladies'-Tresses (Spiranthes romanzoffiana) Mount St. Helens and Spirit Lake from Windy Ridge Northern Green Bog Orchis (Platanthera aquilonis) Malaysian Blue Clipper Butterfly (Parthenos sylvia… Automobile Destroyed in the Mount St. Helens Erupt… Norway Pass, Mount St. Helens National Volcanic Mo… Mount Robson, Berg Glacier and Berg Lake Northern Twayblade (Listera borealis) Unidentified Alpine Sedge Silky Locoweed (Oxytropis sericea) Unidentified Alpine Sedge Silky Locoweed (Oxytropis sericea) To Snowbird Pass The Route to Snowbird Pass Arctic Willow Catkin (Salix arctica) Ice Caves, Robson Glacier Looking West From Above Robson Glacier Yellow Mountain Saxifrage (Saxifraga aizoides) Robson Glacier and Ice Caves Grenovia aurea Ice Caves, Robson Glacier Ice Cave, Robson Glacier Small Northern Yellow Lady's Slipper (Cypripedium… Wall and Rearguard Mountains Western Indian Paintbrush (Castilleja occidentalis… Green Bog Orchis (Platanthera huronensis) Robson Glacier Yellow Mountain Heather (Phyllodoce glandulifera)