Yeah, if I had to claim two religions one would be Judas Priest heavy metal and the other would be climbing volcanoes.  The Cascades have about a dozen smoking guns that run in a north-south line from the Canadian border down through Washington State and Oregon and into Northern California. I have climbed about half of them.  Mount Saint Helens is the most famous of these, erupted in 1980.  I got to watch it go off which was one of the most incredible things I have ever seen.

My favorite peak to climb is South Sister (of a closely-knit group called the Three Sisters) which I climb at least once every summer.  Even wrote a short, handwritten book about it which got some local interest.