Warm air, carrying more moisture than cold air, will rise to the top of the dome, and natural ventilation brings it along cold fingers where the water can condense. There must be a mechanism whereby, when enough water has been collected this way, it drips out back to the floor, like water pours of out a tipped water clock. Back down, it can be reabsorbed and evaporated again by the vegetation and the lake.
After the rain, the team noticed that there was a bad smell. Following the source of the stench led us to some sort of collection basin and a structure next to it, perhaps a water purification or reprocessing station? It is not clear what this structure is for or how exactly it is part of the water cycle or mineral cycle in the biosphere.
However, I am quite certain that this is the last piece of the riddle that points us to "the stench of sin". We have been able to force the entrance door to what, for lack of a better understanding of its purpose, we are calling "the sewers".
