Bill walked out to see what was the condition of the cave walls and whether it would be better to just cut their losses with the cave now or if it was secure enough to spend the night, but he became absolutely petrified after he saw a giant hole made in the cave's dead end with several glowing yellow eyes staring right at him.
He was frozen with shock as the last thing he expected to see after coming out of the barrier was an opening made in the previously secure cave and an unknown number of beasts that were making their way inside.
The shaking of the cave had made the two torches that Mako had made the day before fall down and burn out. It was pitch black inside the cave right now with the only sources of light being the fire from the campfire that Bill had protected while forming the barrier and the glowing pair of yellow eyes that kept growing in size as the beasts were about to enter through the hole.