Grady and Sembène found the Pack a little less than a four-minute walk west of the nobles' necropolis, where the lava tube started to descend gently.

Hidden behind the corner of a turn, they watched them advance with a quick pace and an alert look, like if the predators were suspicious about the presence of remaining intruders in the mountain.

As they couldn't appear behind their backs and act like if there was no danger, the keepers had to wait for the dinosaurs to be far enough before moving further and join the next hiding place.
Sembène saw a crack in the wall opposite of theirs, halfway between them and the dinosaurs, and big enough for a man to sneak in, but he didn't know where it led and if there wasn't any cul-de-sac at the end.
From where they stood, one could hear the roar of a waterfall. They were not far from the exit.

Further ahead, out of the sight of the keepers, one of the neoraptors let out a single call, the one that individuals of this species made to indicate to their congeners that they had reached a certain location.

To this call, the Indominus answered by another which echoed against the walls of the lava tube and was the imitation of the one which was the equivalent for the raptors of a "heard" or "understood".

The problem was that this call came from behind the two keepers. Making an estimation with the sound, they assumed the Indominus was a hundred meters behind them and that she was getting closer.

If they could not find a way to get out of her sight of that of the other predators, they were like dead ducks.

"There, a passage!" Sembène indicated to Grady in a low voice, pointing a crack he had seen, before moving furtively towards it.

Grady followed his colleague, moving as sneakily as possible, and Sembène moved inside the crack first.

Being slenderer than Grady, he had no difficulty doing this while the latter had to pull his stomach in in order to get into it in his turn and move through the crack.

As he sneaked deeper, he was looking towards Sembène and thus, he didn't saw the Indominus lower her head next to the crack and stop an eye in front of the opening.
She looked at them silently for a moment or two before moving on.

After half a dozen of meters, they reached the end of the narrow passage and ended up on what appeared to be a cornice.

Desiring to save the batteries of their night vision goggles as much as possible, they decided to remove them and use their flashlights instead.

By lighting the surroundings, they realized that the cave they were facing was certainly spacious but not as large and tall as the Temple, and the shape was not the same, more elongated and not circular.

Sembène approached the ledge to see what was down below but at the moment he set foot on it, the rock crumbled beneath him and he fell forward, letting out a cry of surprise before Grady could catch him.

The latter heard him tumble down along with stones and he heard a crack.

Grady worried that his friend had broken a bone or worse.

"Barry!"

"I'm okay," Sembène reassured him. "It wasn't my bones that you heard..."

Grady shone his flashlight to where Sembène's voice seemed to be coming from.
Just under the ledge of the cornice, there was a kind of steep slope of small rocks.

He cautiously moved down it and joined Sembène, who was sitting in front of bones and had a hand resting on his forehead over a wound.

Grady helped him stand up and they lowered their eyes to the tibia, the fibula and the metatarsals that Sembène had crushed at the end of his fall.
The leg to which these bones belonged was ended by three clawed fingers.

With their flashlights, they swept over the femur, the ilium, then on the ribs, the cervical vertebrae and finally lit an elongated skull that featured a small point at the end of the snout. It was a Proceratosaurus, an adult female.

Grady raised his flashlight to direct it towards the opposite end of the cave and then swept first to the left and then to the right, revealing the skeletons of a Proceratosaurus' clan, over thirty individuals of both genders and all age categories, scattered in the cave. There was also a dozen of basket-shaped nests, made with vegetation collected outside the mountain that was falling to dust and even human bones.
Inside these, they could distinguish many eggs and even hatchlings that had never left them.

Grady and Sembène initially thought that the predators had been asphyxiated in their sleep, explaining the fact that the entire clan or at least the majority of the individuals making it had succumbed, but something was strange.

If the individuals were sleeping when they had been asphyxiated, the keepers would have found them curled up (the proceratosaurs usually slept that way) and not lying on the side or the back with the neck arched back and the jaws wide open, betraying the great suffering felt by the animals during their death. In addition, once they detected a danger, the adults would have taken away from the nests as many hatchlings as they could but Grady and Sembène only saw a handful of hatchlings outside the nests and among those, only one was being carried between its mother's jaws when she fell as she was heading towards the slope that Sembène had tumbled down, intending to climb it up and reach the crack.

Whatever was the evil that had struck the clan, it had acted so suddenly that is seemed that no proceratosaur had left this cave alive.

As they walked slowly and respectfully with gloomy faces, like if they were crossing an accident site or a battlefield, the answer to this mystery soon appeared to the keepers when Grady stumbled into a metal object that he picked up.

It was a small black sphere on which one could decipher a series of characters that Sembène read:

"MORO-12 ... What is this thing?"

Having seen once this name in an article, Grady realized that the object he was holding in his hand was a gas grenade.

"A nerve gas. Fatal by inhalation. Used a few years ago in assassinations, terror attacks and even genocides... This is how InGen won the Saurian Wars and reclaimed Isla Nublar," he stated grimly.

The neurotoxic gas had caused severe convulsions to the animals and in their agony, some had fallen right on the nests, crushing eggs or hatchlings under their weight. In the middle of one of the craters of bone and dried ferns, several hatchlings still seemed to be squealing, their skeletons huddled together.

"Do you think Masrani knew about that, despite his intentions he claimed he had at the time and even a few hours ago?"

"Likely. People like him are ready to do anything to further their goals, including breaking promises," Grady affirmed. "He moved heaven and earth to ensure that Jurassic World see the light of the day, even if it meant to bind its foundations with a mortar made of blood..."

While continuing to sweep the place with their flashlights, they saw other grenades and noticed that almost all of them had landed near the nests and looking up at the ceiling, they saw two other cornices than the one by which they had come, higher, overlooking the nests and accessible from tunnels large enough to be taken by humans.

In the light of the torches, they saw the entrance of a tunnel at the end of the cavern and wishing to get away from this gloomy place, they accelerated the pace to head there but at the same time, they felt the aftershock that preceded the explosion on the Sibo's eastern side and it encouraged them to quickly leave the mountain.

They ran into the tunnel, passing next to the skeleton of a juvenile proceratosaur which had the particularity of having a leather collar around its neck and on the collar, a black box had been strapped, an emitter that had allowed InGen's troops to follow the animal and find the precise location of its clan's lair.