As long as the rope dangles down and holds the opening of the sanctuary open, the party members within the space are able to perceive Yix's telepathic messages.

The lizardman is alive, but where is he?

Through Yix, the druid's perceptions are relayed to the rest of you. Of course there is the deafening roar of falling water. You also perceive wet stone. The lizardman is still only semi-conscious. His eyes must be closed because you get no visual images.