Some has asked what one can expect in the ground. I am not a...

Some has asked what one can expect in the ground. I am not a certified geologist but this is my understanding.

Anomaly of gravity and modelling results indicates there is definitely some thing in the ground other than what we see at top.

It could be

Rare Earths
Mn Deposits
Gold Deposits

or cement deposits for query(Aragonite).

Most likely one of three or all first three there. Else large quarry for Cement there, still worth for some good money.