He comes upon Dinorah in the darkness. She sings of the curse of the treasure, whereby Corentin learns of Hoel's real motives. When Ho l returns, Corentin confronts him with what he has learned, but Ho l dismisses it and asks Corentin to go down to the ravine. Dinorah reappears, and Ho l still thinks that she is a spirit. Corentin tries to cajole her into going down to the ravine, but she instead sings of birds.
Thunder is heard and then lightning, which brightens up the stage.
The goat is seen crossing a bridge over the ravine and Dinorah rushes after it falling into the ravine in the process. Ho l suddenly realizes that it is Dinorah, and he goes to her rescue. A Reaper's song follows, then a duet of goatherds playing their pipes, then all join in a quartet. Corentin enters, unable to speak of anything but the frightful events of the previous evening. Ho l enters carrying a limp Dinorah, who he thinks is dead.