$10 in Groupon Bucks

The Mt St Helens Adventure Tour from Portland

Terran Travels

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Travel to Mount Saint Helens and environs, from Portland, on this ALL-INCLUSIVE tour with a guide who will discuss the geology, ecology, climate, history, and legends of the area, as well as the history of US public lands. Your guide will lead you on hikes near waterfalls, through lava tubes, and within oldgrowth forests.

You will see some of the most unique geological features in North America, including North America's longest continuous lava tube and a lava tree mold forest. Weather permitting, you will be driven to the closest viewpoint into the crater of the volcano, where you will be provided a picnic lunch, overlooking Spirit Lake. No matter how hot the weather, you'll enjoy natural air conditioning as you hike by dramatic waterfalls and through primeval forest. You'll have the option of a dinner/beer stop (own expense) on the way back to Portland. *THIS IS A 12-HOUR TOUR* *We are the only operator in Portland who has sneeze guards between the rows in our vehicle.*

Groupon Customer Reviews

Relevant Reviews
Rating of 5 out of 5 stars
August 12, 2022
I was looking forward for this tour since a while ago and I am simply amazed by breathtaking places we visited. My favorite were Ape Caves and the forest with the really old Cedars. Our tour guide Ben was super nice and patient, we were just 2 people in the tour and neither of us spoke English as a first language. But Ben always made sure we understand everything and that was really appreciated.
Rating of 5 out of 5 stars
6 days ago
Brittany wonderfully guided us to an extraordinary set of cave experiences and views! Epic tour! Cave exploration is a unique way to bond with friends and family, and we loved it. The views atop the 400+ staircase was breathtaking.
Rating of 5 out of 5 stars
July 15, 2022
Lava tube cave, clear day to view Mount St Helen’s. Had sufficient time to climb to observation. The drive was long and winding but worth it. Finished day viewing Horsetail Falls. Lunch was underwhelming but snacks were good.
See all reviews

About This Deal

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This is a typical itinerary for this product

Stop At: Mount St. Helens, WA 98649

Travel to Mt. St. Helens and environs with a naturalist guide who will discuss the geology, ecology, climate, history, and legends of the area, as well as the history of US public lands. Your guide will lead you on hikes near waterfalls, through lava tubes, and within oldgrowth forests. Stops both inside and outside of Mt. St. Helens National Volcanic Monument.

Duration: 7 hours

Stop At: Ape Cave Lava Tubes, Cougar, WA, United States, Longview, WA

Traverse North America's longest continuous lava tube! No matter how hot it is outside, the temperature in the cave is a constant 42F (5.5C), so bring layers. Also, be sure to bring shoes that are suitable for scrambling, and wipe those shoes before entering the bats' home so that they don't get white-nose syndrome!

Duration: 1 hour

Stop At: WIndy Ridge Viewpoint, Forest Service Rd. 99, Amboy, WA

Weather permitting, we'll take you to the closest viewpoint with a view into the crater that is accessible by vehicle. There you'll have a picnic lunch, and have the opportunity to burn off your lunch by ascending the 357 stairs to a 365-degree view overlooking Spirit Lake, with the mountain looming. If conditions are clear enough, you'll see four stratovolcanoes: St. Helens, Rainier, Adams, and Hood.

Duration: 1 hour

Pass By: Johnston Ridge Observatory, 21500 Spirit Lake Highway, Toutle, WA 98649


Pass By: Trail of Two Forests Trail, 42218 NE Yale Bridge Rd Gifford Pinchot National Forest, Mount St. Helens National Volcanic Monument, Amboy, WA 98601-4601


Pass By: Mount St. Helens Visitor Center, Hwy. 504, milepost 5, Castle Rock, WA 98611


Pass By: Lava Canyon, South Cascades, Stevenson, WA


Additional Information

  • Confirmation will be received within 48 hours of booking, subject to availability
  • Not wheelchair accessible
  • Not recommended for travelers with back problems
  • Not recommended for pregnant travelers
  • No heart problems or other serious medical conditions
  • This tour operates in all weather conditions, and the cave is 42F (5.5C). Please dress in layers.
  • We recommend shoes that are suitable for minor rock climbing (i.e. scrambling/bouldering).
  • Travelers should have a moderate physical fitness level
  • Wear long pants, as there will be opportunities for crawling.
  • This experience requires a minimum number of travelers. If it’s canceled because the minimum isn’t met, you’ll be offered a different date/experience or a full refund
  • This tour/activity will have a maximum of 14 travelers
  • Face masks provided for travelers
  • Hand sanitizer available to travelers and staff
  • Gear/equipment sanitized between use
  • Transportation vehicles regularly sanitized
  • Guides required to regularly wash hands
  • Regular temperature checks for staff
  • Paid stay-at-home policy for staff with symptoms
  • Contactless payments for gratuities and add-ons
  • Lunch
  • Air-conditioned vehicle
  • PA system to hear guide while driving
  • Snacks
  • Bottled water
  • Headlamps
  • If weather does not allow mountain visibility, a modified itinerary will take you to bonus stops.
  • Professional naturalist guide
  • Hotel pickup/drop-off in Portland area
  • Gratuities
  • *We are the only operator in Portland who has sneeze guards between the rows in our vehicle.*
  • Entry/Admission - Mount St. Helens
  • Entry/Admission - Ape Cave Lava Tubes
  • Entry/Admission - WIndy Ridge Viewpoint

  • Hotel pickup/drop-off in Seattle area

Departure Point
523 NE 19th Ave, Portland, OR 97232, USA
Traveler pickup is offered
*We do not guarantee pickup at your hotel, as we consolidate pickups to 3 locations. We also do not do pickups in Hillsboro.* We will contact you the evening prior to confirm pickup location and time.


  • Portland Intl Airport, 7000 NE Airport Way, Portland, OR 97218


  • Port of Vancouver USA, 3103 NW Lower River Rd, Vancouver, WA 98660, USA
  • Port of Portland, 7200 NE Airport Way, Portland, OR 97218, USA
  • Terminal 6, 7201 N Marine Dr, Portland, OR 97203, USA
  • Terminal 4, 11040 N Lombard St, Portland, OR 97203, USA
  • Port of Kalama Marine Park, Kalama, WA 98625, USA

Departure Time
08:00 AM

11 to 12 hours

Return Details
Returns to original departure point

Voucher Info
You can present either a paper or an electronic voucher for this activity.

The tour identified in this promotion is made available through Viator. Groupon is not affiliated with or sponsored by the Terran Travels in connection with this deal. Please contact Groupon customer service for all inquiries related to this offer. Inquiries placed to Viator will be directed back to Groupon.

This offer is not eligible for promo codes.

Fine Print

For a full refund, cancel at least 24 hours in advance of the start date of the experience.

Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services. Offer is not eligible for our promo codes or other discounts. Learn about Strike-Through Pricing and Savings