BLOW HOLE SURGE CHANNEL
Surge channels are basically a eroded fault.
All rocks have cracks or faults in them. Expose them to pounding water & the fault will begin to erode like a cavity! After a few thousand years this cavity will get bigger to produce a surge channel.
I have seen a aerial shot of this spot & can physically see the fault running right across the point! This channel will eventually cut right through making the rock on the left a island.
I know of at least two people who fell into this surge channel & died! It’s a very dangerous place! I am always careful when walking above!