Because of the trust Michael was given, he made a choice.
He chose to show the Forest Elves the Temple of the Forgotten.
Exposing the Temple of the Forgotten to the Forest Elves could turn into a big blunder and his worst nightmare, but Michael decided to trust them – just like the Elders of the Forest Elves trusted him as well.
Furthermore, Liopham had already seen the outer area of the underground ecosystem when they conquered the lizard cave. The EmeraldLeaf Adventurer team would find out about the Temple of the Forgotten sooner or later, either way.
'If they've learned the old tongues, they might be able to help me decipher the language used by the Temple of the Forgotten!' Michael hoped.
He was not confident that the Forest Elves knew the languages, but they were more likely to know something than any human.