Thunderclap

You are on an exploration trip in the Cretaceous Period/the time of the dinosaurs, but then you heard a strange sound somewhere, 5 meters away from the place you are exploring. You started walking with admiration and curiosity to the place where the strange and somewhat scary sound was coming from and over there a herd of Pterodactyls were sitting and talking, inside some large rocks that you are standing and hiding behind, while you look at them with admiration. Then you went a little closer and hid in the next large rock and suddenly you can now hear that they can talk like we, humans, do. Then when you bent forward with your ear and tried to get a better view of them, suddenly you happen to fall down to the ground some rocks, which were making small noises.