Breath of the Wild HELP Stuck in first room in the Magnesis Trial (Oman Au Shrine)

Question

Am in first room of Oman Au Shrine for Magnesis Trial (its the very first shrine in the game) and there is noowhere to go! Help!

Answer 1

Did you get the rune yet from the pedestal?

There are 2 metal plates on the ground which you can lift using the magnesis ability this will reveal a tunnel underneath

The wiki is your friend:

Magnesis Trial Walkthrough