Is it... Could it be... A ML Equinox!!? Nope! Sorry! My bad!
It looks like a Cerambycid bore hole. I wouldn't be around when that thing hatches though.
Other than that, I see a rock and a leg.
MineLab E-Trac, MineLab Safari, MineLab Explorer XS,
White's 5000 D, White's 6DB, White's 5000 D GEB
Sunray X-1 for the ML's, Garrett PP for the White's and a Backhoe