Must be close to the bottom now? I see some rebar placed on the south side of the site. I wonder if this tower will need pilings because it's on a hill like this?
This is going to be one of Edmonton's landmark structures -- beautiful tower, thoughtful integration on how tower meets podium, intricate podium (sensitive to the hill site), detailed landscape, and great integration of historical structures. Kudos to maestro Kennedy.
It looks to me @Daveography like they are placing "soil nails" which would make sense for retaining a hillside condition. I don't think that just a vertical retaining wall will cut it.