Of the first two-day jaunt, this was probably the most stunning all-around. I don't know if words really work to describe how it shined in the morning; the pictures below do it much better justice.
The park is technically a state park but is maintained by the SRWMD, so there's no visible staff or complex facilities; this probably went a long way to preserving some of the fun of the park. The spring has a direct-access jumping platform and a dock; paths are made of mud and roots, not concrete; there are no ropes to be found in the swimming area. The spring run snakes around a small limestone formation and into the Withlacoochee river, crashing over a line of rocks into the tannic water.
This spring has everything: cave diving, free diving, deep swimming, shallow areas, wading areas, relaxing rapids, river wading, and fishing. My only regret is not swimming. We were in a hurry and it was the first spring of the day, but I do very much regret it. Madison Blue Springs State Park is highly recommended, and I cannot wait to go back someday.