The big passage in Broken Rowboat Cave ends in a jumble of rock leading downward at one end and a sediment blockage at the other end. The big passage is met about midway along by a crawl tube from the outside and another tube leads off from it that is blowing cold air.
Its kind of funny in a way as there is a worn depression in the dirt that leads from the outside, down the entry tube, into the big passage, and then down the passage that is blowing air – the depression is likely trodden by some little cave dwelling animal (porcupine, raccoon). I saw no scat or other clues around – maybe its gnomes!!!
Anyway, as the cave is not so far below the surface and yet quite heavily marked by large scallops, I wonder if the sediment blocked end had once taken running water from the surface. There are many large soil filled grykes in the around there.
In the above picture JC is investigating crevices in the area. We are wondering if there are other entrances. The cave must go downward as because of the topography the tunnels can’t be too extensive at the level that we were exploring.
Downward would seem a likely possibility for several reasons – one is that at one end of the big passage there already is a rubbly pit in that direction, secondly, because water flows downward, thirdly, because the joints in this area are especially wide – so why not deep as well? And also because it would seem a logical route for the water to flow as there seems to be obstructions on the surface that might make it the most logical route to follow.
I suppose the tube that is blowing cold air will reveal to us whether our exploration will continue, or whether it will stop right there with the usual crushed expectations. I suppose we can’t complain, if every hill had a cave beneath it – well looking for caves wouldn’t be quite so rewarding.