Larian Studios Forums Divinity 2 - Ego Draconis (English) Help/Tips/Tricks lost again >.< - hall of echoes related

Where do you go after you get the "note from Maxos" the "Shield" and the "Hall of Echoes Sigil"?

game not telling me whats next..

Le sigh.
There is a thousands of threads with such question. Is it so hard to use Search button?

Anyway, back to topic: there is a cave behind a waterfall near to the grand Champion statue.