Exclusively decomposed granite excavated for 12 feet deep means what ? I'm not a geologist. Any guesses or facts appreciated.

[Sandy1devotee369]

Wanted to know if it is natural or not? The picture does no justice as to how much was actually removed. That's just a minuscule amount.

 

[Back-of-the-boat]

Digging a septic line by hand as a kid I ran into some that ran on for about 12 feet and I was 6 foot deep so I think it is a pretty common occurence to find it like that.

 

[Sandy1devotee369]

Thank you, I appreciate your input.