Gnamma Holes

I found some good examples of these holes when geocaching east of Norseman.
Co-ords are S 32° 04.700 E 122° 02.083.
M.

It looks natural Steve.
Did you notice any artefacts around?....or any inscriptions?

Cheers
Alan

doubt is fully natural

it would have started off as a good collection deep point and the aboriginals I assume divert the water away and then deepen them by lighting fires and chipping off the exfoliated granite deepening them bit by bit

Can be a simple Natural formation: I've seen dozens in a small area of Reedy Creek, near Mannum (SA).
A few pebbles in a small depression in the rock get swirled around as floodwater rushes over them and abrade the hole: the small detritus is washed away (and smaller pebbles as they wear down) and the remaining larger pebbles continue the erosion. These holes can get many feet deep before the accumulation of larger pebbles is too much to swirl around.

Cheers
Dr Hook

hi steve m1 wa
that one looks very natural and untouched
myself and neighbouring farmers cleaned one out that was 4ft deep many years ago in the wheatbelt and found many different types of bones from dead animals that had sliped into it there were emu /dingo/fox and roo bones amonst the collection
out there in that one there could even be camel or human bones at the bottom and it might be deeper than you think as silt builds up in them over time
i doubt imho that it has been enlarged as there doesn't appear to be any large cracks to indicate it has been bush fired for enlargement
when you heat granite rock with a very hot fire for a considerble duration in the afternoon the cold chill at night will severely crack the surrounding rock
would be interesting to clean it out but may have already been done by an archi group
cheers

Thanks for all your replies.
When I am out that way next I will see what is in the bottom.
Balladonia has a average rainfall of approx 275mm, With the amount of camels in the area it may be dry.

Thanks
Steve