the rodwell where they melt the ice for their water makes a big cavern in the ice. the previous rodwell is used for all greywater/human waste, indeed making a g

the rodwell where they melt the ice for their water makes a big cavern in the ice. the previous rodwell is used for all greywater/human waste, indeed making a giant shitcicle. when the current freshwater rodwell is done, they start a new one and that one becomes the new dumping one.