up
1.
to break the ground into small pieces before planting seeds, building sth, etc. :
They are digging up the football field to lay a new surface.
2.
to remove sth from the ground by digging :
An old Roman vase was dug up here last month.
3.
to discover information about sb/sth
SYN unearth :
Tabloid newspapers love to dig up scandal.