How can I get into the crater?

Hint 1 of 7:

Once you are at the ledge of the crater, you have to go to the control
platform.

Hint 2 of 7:

There is a piece of the walkway that has swung down.

Hint 3 of 7:

You need to bring it up, and latch it in place.

Hint 4 of 7:

You need to use something with a handle to bring it up.

Hint 5 of 7:

The umbrella will bring up the walkway.

Hint 6 of 7:

Remember to flip the small latch at the right.