Here is the pile of soil/sand.
The news coverage showed this sand pit when mentioning where Gus was playing.
Thanks for that, I went looking at news articles and videos this morning but all I could find was the same 4-5 pics recycled over and over.
As we can see, this is no regular "sand pit" that first comes to mind when you think of young children playing in sand. It looks to be a decent sized mound of sand, or dry dirt. It appears to me, by the vegetation growing around and on top, that it's been there for a long while. However, the part free from vegetation around the front looks to me to be a little disturbed. Whether that was the area he was playing in or not, we just don't know. However, to my untrained eye, it looks like this mound has not been dug through or flattened to be sure little Gus didn't somehow collapse into the mound.
Have we been able to determine how far this sand pile is in comparison to the house? Even if he was in ear shot of adults, I'm sure it wouldn't take long for him to collapse into the sand and die, therefore maybe not even crying out for help.
Poor little boy, he needs to be found today!
***EDITED TO ADD*** Just for scale: The rusty barrel to the right of the pile is likely to be a 50 litre drum, which in my opinion would be taller than a 4 year old, and big enough to contain a child that size. Not that I'm suggesting he is in one, I'm just putting it out there to show the size and likely how big Gus is in comparison. MOO