Upon further review, I am convinced that we would have found the hardest possible way to reach a known cave that isn't so far from a road way up the gorge. But we didn't get there, partly on the advice of the gentlemen in the photo, who made it clear that it would be an overnight trip and we didn't have the gear for that.
My time in Zambia was fun and productive, but this bit was just fun. Of note, it was 104 degrees out, so we didn't need a sweater.