deep within
- buriedPlaced beneath earth
- hiddenKept out of sight
- coreCentral essential portion
- heartCirculatory system's pump
- soulInnermost animating essence
innermost · profound · subterranean · underground · beneath · interior · cavern · depths · marrow · essence · sunken · abyss · rooted · embedded · secret · fathoms · belly · womb
spatial depth/interiority
deep withinon the surface
In apparent aspect only
on the outside · outwardly · superficially · skin-deep · superficial
accessibility/discoverability
deep withinout in the open
Visible to everyone
in plain sight · on the surface · in plain view · front and center · at one's fingertips