No you do not need to purchase a pass of any type to enjoy any of the park or lava tubes.
We drove to the end of the road without being required to purchase anything.
Yes to the visitor center but it is very worth it :)
It appears to be 8 dollars per person. And 15+ under are free. I found a phone number for Mt St Helen's. 369-449-7800. I hope this helps you.
No
No, only in the visitor centers.
Just for the visitors center.
Only through visitors' center...but it's worth it.
No, only into the vistor centers
Thank you all for the info
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