The entrance to the Underworld (realm of Hades) is in the Temple of Hades. Put pomegranates (from the garden of the Sphinx) on the altar to open the door.
You cannot move the rock from the throne room. Only Hercules can do that, and not until you have collected the 5 sacred items and returned them to Athena at the Tree of Immortality.
To enter the underworld in Mythology Island, you need to first acquire a coin from the River Styx. Use this coin to pay Charon the ferryman to take you across the river to the underworld entrance. Then, navigate through the underworld by solving puzzles and challenges to reach the heart of the underworld.
Pomegranate will let you proceed to the entrance to the underworld.
cerbus is in the underworld of poptrpica mythology island
they're the offering for the underworld temple.
go to the underworld and play it on the dogs
In the Underworld-hell- as the guard dog of the god Hades.
Click on him then click on the graffiti.
Go to the Temple of Hades to the right of the island. Clean up the graffiti to earn a drachma, then use the pomegranates (from the tree in the Sphinx garden) to enter Hades realm. You will rise the River Styx and get a whisker from Cerberus.
The most powerful of the Greek gods was Zeus. On Mythology Island, he shares power (reluctantly) with his brothers Poseidon (the sea) and Hades (the Underworld).
It only has four rounds of hazards.
Get the pomegranates from the tree in the garden of the Sphinx, and put them on the altar.
You have to get Hercules to do it (I forgot how to get him to help, sorry!)