I remember my pals in the BIG/IUSC speaking of Baby Shit mud often as a descriptor of the Light brown very liquid mud perhaps best found in Binkleys Cave in Indiana although it can be found in the overall Mammoth Cave area too in the lower passages.
Speaking of Mammoth there is an incredible preponderance of Cave Beetles there and they leave evidence of their existence by aerating the soil surfaces until it has the appearance of the finest lace Swiss cheese. It is always a clue you are forging ahead into virgin territory which is not that hard to do , even in Main Ridge Mammoth. It doesnt look wet at all but as your knees and elbows sink into it , your formerly dry clothes begin to sponge up amazing quantities of H20. I never heard this discussed specifically back in the 80's ( my time of activity with CRF and Roppelgangers ) , I would propose however the term Mammoth Cave Mousse as a descriptor for the soil surface left behind by those amazing beetles. Somebody ask Roger Brucker now , ....