excavate
verb.
recover through digging
Schliemann excavated Troy|excavate gold
Synonym: unearth
verb.
find by digging in the ground
I dug up an old box in the garden
Synonym: dig up, turn up
verb.
form by hollowing
Carnegie had a lake excavated for Princeton University's rowing team|excavate a cavity
verb.
remove the inner part or the core of
the mining company wants to excavate the hillside
Synonym: dig, hollow