User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-3146930-20130720154210

So I just noticed Hazel's powers don't make sense. Hazel is mostly able to control precious metals from under the earth or any kind of stone that has value. She is also able to detect where a tunnel leads and have tunnels change for her. So, why can't Hazel control earth in the same way Nico can. I mean Nico is able to control Erebus (the black ways of the Underworld) and open up portals to the Underworld (as he did with the skeleton warriors in The Titan's Curse). Hazel on the other hand can't do this, so unless those tunnels are made of solid gold or whatever, how can she control Earth in one form, but not in any others?