Besides the Delorme, county, state park, and Calliope's Challenge, what challenge caches do you know of physically in the state of Arkansas?
I'm planning to add a few more that I have seen in other states on my travels, but want to make a statewide challenge cache bookmark list.
And yes, I've talked with Groundspeak and Chuck Walla about them, and the ones that will be added are valid and won't contain ALR's.
Anyway, any that you know of, post em here.