"That is our guardian." Bermegan explained, closing in on the water without entering. "For decades it has stopped Vergals using this tunnel, but it has stopped us using it aswell."
From the bubbles, a long, snake-like head emerged with sharp, sizeable fangs. The entire neck and head were covered in dark green scales, protecting it from attacks.
"We never understood how it got around this place, but we're guessing it uses something below the level of water. Anyway, though it pains me to destroy something that has kept us safe for so long, I don't think they are going to let us pass."