Spend 11–12 hours traveling from Portland into the raw landscape reshaped by the 1980 eruption. Hike through lava tubes, inspect lava‑tree molds, and, weather permitting, enjoy a crater overlook picnic with views to Spirit Lake.
More ways to explore the area's outdoor wonders
The day begins long before the crater comes into view: a bus eases out of Portland and the Willamette Valley slips behind, replaced by fir forest and roads that climb toward the Cascade foothills. On this full‑day excursion, the guide sets a deliberate tone—pointing out basalt flows along the highway, sketching the eruption sequence on a tablet, and explaining how an instant of geologic violence rewrote this landscape.
Difficulty
moderate
Duration
11–12 hours
Fitness Level
Moderate—able to handle several short hikes (0.5–2.5 miles) and uneven terrain; stair climb to lookout.
Wildlife
History
Mount St. Helens’ catastrophic eruption on May 18, 1980, removed the mountain’s north face and released ash across several states, reshaping ecology and land management policies.
Conservation
The monument emphasizes recovery and science; follow Leave No Trace, avoid off‑trail travel in fragile regrowth zones, and respect wildlife closures to support ongoing research.
Reserve your spot on the The Mt St Helens Adventure Tour from Portland today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Layer for the cave
The lava tube stays a steady 42°F (5.5°C). Bring a warm midlayer and a lightweight shell even on hot days.
Wear grippy footwear
Trails include loose volcanic scree and short scrambling sections—sturdy hiking shoes with good tread are recommended.
Bring refillable water
The tour provides bottled water but carry a refillable bottle for the day’s hikes to stay hydrated.
Wipe boots before entering caves
To protect bats from white‑nose syndrome, clean visible mud before entering lava tubes and follow guide instructions.
Sturdy hiking shoes
Traction and toe protection for scree, boulders, and lava tube surfaces.
Insulating midlayer
Keeps you comfortable in the 42°F cave and on exposed overlooks.
Daypack with water bottle
Carry snacks, water, camera, and a lightweight rain shell for variable weather.
Headlamp or small flashlight
Guides supply headlamps, but a personal light is useful for exploring cave approaches.