Old emotions (submerged / buried) need to be brought to consciousness; psychological work on self. Similar to Taking Apart. Self-determination is asked for. It is important to note what it is that is being excavated (a submerged potential?).
Freud looked on the process of psychoanalysis as an act of excavation.
Hunting for something that seems elusive or hidden from direct view. Due to the soil involved, this may have something to do with personal foundations.
Metaphorically digging up the dirt on someone or a situation.
Uncovering treasures that are just waiting for your persistent efforts to discover them.
Digging through your own past to discover the worth of experiences, and how they have made you what and who you are today.