In the bunker or not?

[SwingsitlikeHogan]

If the face is revetted it is not part of the bunker.

Quite - but is the OP not simply describing a scenario almost identical to that which can happen when the face of the bunker is revetted? Accepting that 'burrowing animal' considerations come into play.

 

[Foxholer]

So in a slightly sloping (evenly) face, the boundary of the bunker is the topmost non-grass-covered point and the bunker extends downwards. so a ball completely embedded in the face is in the bunker if the embedded-ness isn't sufficient to pass the vertical point of the boundary of the bunker.

Is that correct?

And having seen several such craters in bunker faces on Monday, I suspect that/wouldn't be surprised if the one the OP went into could well be not a burrowing animal's one, but a previous embedding that has eroded. So some degree of certainty (such as further examples of burrowing) is likely to be needed before a hole can be defined as one made by a burrowing animal. And, while on that subject, remember that a Squirrel is not a burrowing animal!

 

[williamalex1]

If a ball has embedded that deep , would that not indicated that it is in abnormal ground conditions ?.

 

[rulefan]

So in a slightly sloping (evenly) face, the boundary of the bunker is the topmost non-grass-covered point and the bunker extends downwards. so a ball completely embedded in the face is in the bunker if the embedded-ness isn't sufficient to pass the vertical point of the boundary of the bunker.

Is that correct?

It is.

 

[duncan mackie]

If a ball has embedded that deep , would that not indicated that it is in abnormal ground conditions ?.

no

soft ground and mud etc are not AGC - in fact they are very normal!

 

[rulefan]

If a ball has embedded that deep , would that not indicated that it is in abnormal ground conditions ?.

It may indicate that it may be an AGC but it doesn't mean it is.

It isn't casual water.
It isn't GUR unless declared so by the committee.
And it isn't a hole made by a burrowing animal, reptile or a bird unless there is strong evidence to support it.