You have to get Hercules to open it.
hes a god
You don't get in until you have collected all of the five sacred items. After that Hercules is convinced to help you and he smashes the gate open.
The key to the gate on Mythology Island in Poptropica is located inside the Tree of Immortality, which is found in the Grove of Temples. You need to solve puzzles and defeat enemies to reach the Tree and obtain the key.
you click on the snake with red eyes 3 times and the gate will open
gate should open next to riddle if the answer is right the answer is TEN
When you convince Hercules he smashes the lock for you
You can't without him.
After you pass the gates you will have to battle Zeus and after that you will win the island medallion from his daughter.
You go to the temple and complete the musician statue's challenge and she will give you a pipe and a tune. When you go to the gate, click the olive, and then play the tune on the pipe the statue gave you the gate will then open.
There is no key when you get Hercules he brakes the lock
you spend it on a air balloon once you get past the gate
There is no key. After Zeus has the 5 sacred items, Hercules will help you go to see Poseidon and Hades, and then he will smash open the padlock on the gate.