Read what other Viator.com travelers think about the Mount St Helens Nature Walk and Cave Tour from Portland. What they loved, what they liked and what they think could be improved, it's all here to help you make the most of your next trip.
The tour is certainly well worth the price and the tour director was excellent. The only part I would change is the amount of time spent in the lava tube. Because of the extreme darkness in the tube and since there is so much to see above ground, it would be better to at least cut the time in the tube to about 5 minutes. Also, because of the darkness, there is always the chance that someone could fall down and be injured. It would be very difficult to get assistance to an injured person. The high point of the trip was the Johnston Observatory, and after that Cold Water Lake. Extra time could go to these places.