After forgetting my SD card on my last visit, I returned to Aquacave with No+Pro and dropbear. This was the same day I visited the location from my last post, so it was nice to visit some-place familiar to end the night!
Fortunately it was low tide so we managed to traipse a fair way downstream.
And silly lighting shots ensued..
The next room always seemed to have excessive amounts of water flowing into it, as you can see two pics down, even today when the last rain had been days ago.
Further upstream we found the answer to the influx of clean water, presumably a leaking water mains! It smelt strongly of chlorine, although no one was game enough to taste-test it..