Civil 3D Imported Topo line -> how to know (x,y,z) ?

[HelloRV]

Hi all,

I drew topo lines in Revit Architecture, and export it to DGN file. Then, I imported it to Civil 3D.
It is 3D in Civil 3D, but i'm not able to find the coordinates (x,y,z). I need them to find out the coordinates to find out the volumes of backfill and infill.
I believe I could know the coordinates because I imported the 3D file from Revit Arthitecture.
Anyone know how to find my (x,y,z) in imported revit file?

<Additional Info: I'm actually trying to find out the best finished level from a given PDF file which has topolines. I am trying to locate a resturant building pad and paarking lot as well. The survey point is not available, and this work doen't have to be precise.>

Thanks for reading.

[Novarese]

Command: _ID then snap on the end of a "topo line", sir.