Lake Avernus.
at the bottom of the ocean
Cerberus
Tartarus
Pomegranate will let you proceed to the entrance to the underworld.
They guard the entrance to the Underworld.
You'll know when you see satins demons.
The Underworld. Another answer may be AVERNO
In the center of the Lake is an Island. That is where the entrance is. During Winter the Lake will freeze and that is the only time you will be able to go there.
Cerberus. be careful when you say hell. what you actually mean is the underworld there was no heaven or hell in greek mythology only mount olympus and the underworld... the underworld was then split into sections that resemble heaven, hell and purgatory.
You go to the Underworld entrance and talk to the guy with the bucket, he'll tell you what to do
Cerberus was a three-headed, dragon-tailed dog who guarded the entrance to the Underworld.
a magical golden bough from a sacred wood