I use to indoor rock climb... for years. There is a sweet climbing gym in Carrollton, TX (http://www.stoneworkssilos.com/ ), off of I-35. It's a converted grain tower with (a few) 100ft. (or more) walls in the silos. There are no 500ft. drops, but it's sweet as far as indoor climbing gos.

I would love to get into true rock climbing. I'll have to figure out where in Oregon (preferably closest to Portland) I could go. Of course, kayaking is calling my name as well.