User blog comment:Mickle1026/sacrifice/@comment-4507215-20111016021454/@comment-3146930-20111016023558

Hera said that Zeus wouldnt accept help from demigods unless they could prove themselves by closing the Doors of Death. Considering they are going to Rome to find them could mean that Olympus could be open again by book 4. On the other hand, they seem to be doing ok, I mean they have already killed three giants